diff --git a/PKHeX.Core/Legality/Encounters/Generator/EncounterCriteria.cs b/PKHeX.Core/Legality/Encounters/Generator/EncounterCriteria.cs
index 2190c59b6..62626aa8d 100644
--- a/PKHeX.Core/Legality/Encounters/Generator/EncounterCriteria.cs
+++ b/PKHeX.Core/Legality/Encounters/Generator/EncounterCriteria.cs
@@ -217,6 +217,20 @@ public bool IsSatisfiedNature(Nature nature)
         return nature == Nature || Mutations.HasFlag(CanMintNature);
     }
 
+    /// <summary>
+    /// Determines whether the Generation 3/4 PID satisfies the Nature criteria.
+    /// </summary>
+    /// <param name="pid">The original PID to check.</param>
+    /// <returns><see langword="true"/> if the Nature satisfies the criteria; otherwise, <see langword="false"/>.</returns>
+    public bool IsSatisfiedNature(uint pid)
+    {
+        if (Mutations.HasFlag(AllowOnlyNeutralNature))
+            return ((Nature)(pid % 25)).IsNeutral;
+        if (Nature == Nature.Random)
+            return true;
+        return Mutations.HasFlag(CanMintNature) || ((Nature)(pid % 25)) == Nature;
+    }
+
     /// <summary>
     /// Determines whether the specified level satisfies the level range criteria.
     /// </summary>
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterEgg3.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterEgg3.cs
index 8ec1e5170..4edc396e5 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterEgg3.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterEgg3.cs
@@ -97,7 +97,7 @@ private uint GetRandomPID(in EncounterCriteria criteria, byte gr, uint id32)
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(gender))
                 continue;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedAbility() && !criteria.IsSatisfiedAbility((byte)(pid % 2)))
                 continue;
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterStatic3.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterStatic3.cs
index 9dbe7e428..60f32f176 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterStatic3.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen3/EncounterStatic3.cs
@@ -137,7 +137,7 @@ private static bool SetRoamerPINGA(PK3 pk, in EncounterCriteria criteria)
                     var rand2 = LCRNG.Prev16(ref state);
                     var rand1 = LCRNG.Prev16(ref state);
                     var pid = (rand2 << 16) | rand1;
-                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                         continue;
                     bool shiny = ShinyUtil.GetIsShiny3(id32, pid);
                     if (criteria.Shiny.IsShiny() != shiny)
@@ -166,11 +166,10 @@ private static bool TrySetMethod1(PK3 pk, in EncounterCriteria criteria, byte gr
         {
             var seed = LCRNG.Prev2(s); // Unwind the RNG to get the real origin seed for the PID/IV
             var pid = ClassicEraRNG.GetSequentialPID(seed);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
-            var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
-            if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(gender))
+            if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
 
             var abit = (int)(pid & 1);
@@ -179,7 +178,6 @@ private static bool TrySetMethod1(PK3 pk, in EncounterCriteria criteria, byte gr
 
             pk.PID = pid;
             pk.IV32 |= iv2 << 15 | iv1;
-            pk.Gender = gender;
             pk.RefreshAbility(abit);
             return true;
         }
@@ -198,7 +196,7 @@ private static void SetMethod1(PK3 pk, in EncounterCriteria criteria, byte gr, u
             if (criteria.Shiny.IsShiny() != shiny)
                 continue;
 
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3.cs
index 616add704..781b79564 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3.cs
@@ -202,7 +202,7 @@ private uint SetPINGA(PK3 pk, in EncounterCriteria criteria, PersonalInfo3 pi)
                 _ when Method is Method_2 => GetMethod2(ref seed),
                 _ => GetRegular(ref seed),
             };
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue; // try again
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
@@ -255,7 +255,7 @@ private static bool TrySetWishmkrShiny(PK3 pk, in EncounterCriteria criteria)
         {
             uint seed = s;
             var pid = GetRegular(ref seed);
-            if (filterNature && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (filterNature && !criteria.IsSatisfiedNature(pid))
                 continue; // try again
 
             var iv32 = ClassicEraRNG.GetSequentialIVs(ref seed);
@@ -301,7 +301,7 @@ private static uint SetPINGAChannel(PK3 pk, in EncounterCriteria criteria)
                     continue;
                 SetValuesFromSeedChannel(pk, seed);
                 var pid = pk.EncryptionConstant;
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     continue; // try again
                 if (criteria.Shiny.IsShiny() != ShinyUtil.GetIsShiny3(pk.ID32, pid))
                     continue; // try again
@@ -317,7 +317,7 @@ private static uint SetPINGAChannel(PK3 pk, in EncounterCriteria criteria)
             SetValuesFromSeedChannel(pk, seed);
 
             var pid = pk.EncryptionConstant;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue; // try again
             if (criteria.Shiny.IsShiny() != ShinyUtil.GetIsShiny3(pk.ID32, pid))
                 continue; // try again
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3JPN.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3JPN.cs
index 975be5752..de2794af2 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3JPN.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3JPN.cs
@@ -79,7 +79,7 @@ private static void SetPINGA(PK3 pk, in EncounterCriteria criteria, PersonalInfo
         while (true)
         {
             var pid = CommonEvent3.GetRegularAntishiny(ref seed, idXor);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue; // try again
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3NY.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3NY.cs
index 30dc0a3d5..07b1be33c 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3NY.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen3/Gifts/EncounterGift3NY.cs
@@ -80,10 +80,9 @@ private static void SetPINGA(PK3 pk, in EncounterCriteria criteria, PersonalInfo
         while (true)
         {
             var pid = CommonEvent3.GetAntishiny(ref seed, idXor);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue; // try again
-            var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
-            if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(gender))
+            if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
             var iv32 = ClassicEraRNG.GetSequentialIVs(ref seed);
             if (criteria.IsSpecifiedHiddenPower() && !criteria.IsSatisfiedHiddenPower(iv32))
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterEgg4.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterEgg4.cs
index 064dae4f5..a13d3ed48 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterEgg4.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterEgg4.cs
@@ -102,7 +102,7 @@ private uint GetRandomPID(in EncounterCriteria criteria, byte gr, uint id32, out
             gender = EntityGender.GetFromPIDAndRatio(pid, gr);
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(gender))
                 continue;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedAbility() && !criteria.IsSatisfiedAbility((byte)(pid % 2)))
                 continue;
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterStatic4.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterStatic4.cs
index 8d7aa53d4..2b88fc94c 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterStatic4.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen4/EncounterStatic4.cs
@@ -135,7 +135,7 @@ private static bool TrySetMethod1(PK4 pk, in EncounterCriteria criteria, byte gr
         {
             var seed = LCRNG.Prev2(s); // Unwind the RNG to get the real origin seed for the PID/IV
             var pid = ClassicEraRNG.GetSequentialPID(seed);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
@@ -167,7 +167,7 @@ private static void SetMethod1(PK4 pk, in EncounterCriteria criteria, byte gr, u
             if (criteria.Shiny.IsShiny() != shiny)
                 continue;
 
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
@@ -206,7 +206,7 @@ private static bool TrySetChainShiny(PK4 pk, in EncounterCriteria criteria, byte
             var shiny = ShinyUtil.GetIsShiny3(id32, pid);
             if (criteria.Shiny.IsShiny() != shiny)
                 continue;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
@@ -234,7 +234,7 @@ private static void SetChainShiny(PK4 pk, in EncounterCriteria criteria, byte gr
         while (true)
         {
             var pid = ClassicEraRNG.GetChainShinyPID(ref seed, id32);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
diff --git a/PKHeX.Core/Legality/RNG/CXD/MethodCXD.cs b/PKHeX.Core/Legality/RNG/CXD/MethodCXD.cs
index 4609e8a77..c01165128 100644
--- a/PKHeX.Core/Legality/RNG/CXD/MethodCXD.cs
+++ b/PKHeX.Core/Legality/RNG/CXD/MethodCXD.cs
@@ -27,7 +27,7 @@ public static class MethodCXD
             // * => IV, IV, ability, PID, PID
             var s = XDRNG.Next3(seed);
             uint pid = GetPID(s, id32, noShiny);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
@@ -65,7 +65,7 @@ public static bool SetFromIVs<TEntity>(TEntity pk, in EncounterCriteria criteria
             // * => IV, IV, ability, PID, PID
             var s = XDRNG.Next3(seed);
             uint pid = GetPID(s, id32, noShiny);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gr)))
                 continue;
@@ -122,7 +122,7 @@ public static bool SetStarterFromTrainerID(CK3 pk, in EncounterCriteria criteria
                 pid = GetColoStarterPID(ref s, id32);
             }
 
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             // fixed gender & never shiny, ignore
 
@@ -166,7 +166,7 @@ public static bool SetStarterFirstFromIVs(CK3 pk, in EncounterCriteria criteria)
             var id32 = sid << 16 | tid;
 
             uint pid = GetColoStarterPID(ref s, id32);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             // fixed gender & never shiny, ignore
 
@@ -280,7 +280,7 @@ public static bool SetStarterFromTrainerID(XK3 pk, in EncounterCriteria criteria
             var s = XDRNG.Next7(seed); // tid/sid (2), fake pid (2), ivs (2), ability (1)
 
             uint pid = GetPID(s);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPID(pid, EntityGender.VM)))
                 continue;
@@ -319,7 +319,7 @@ public static bool SetStarterFromIVs(XK3 pk, in EncounterCriteria criteria)
             var s = XDRNG.Next3(seed);
 
             uint pid = GetPID(s);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
 
             var tid = XDRNG.Prev3(seed) >> 16;
@@ -359,7 +359,7 @@ public static void SetStarterRandom(XK3 pk, in EncounterCriteria criteria, uint
             // Get PID
             seed = XDRNG.Next7(seed); // tid, sid, fakePID x2, IVs x2, ability* => pid1, pid2
             var pid = GetPIDRegular(ref seed);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPID(pid, EntityGender.VM)))
                 continue;
@@ -407,7 +407,7 @@ public static void SetStarterRandom(XK3 pk, in EncounterCriteria criteria, uint
         {
             // fakePID x2, IVs x2, ability, pid1*, pid2
             var pid = GetPIDReuse(ref seed, id32, noShiny);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gender)))
                 continue;
@@ -451,7 +451,7 @@ public static void SetRandom<T>(T pk, in EncounterCriteria criteria, PersonalInf
         {
             // fakePID x2, IVs x2, ability, pid1*, pid2
             var pid = GetPIDReuse(ref seed, id32, noShiny);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gender)))
                 continue;
diff --git a/PKHeX.Core/Legality/RNG/CXD/MethodPokeSpot.cs b/PKHeX.Core/Legality/RNG/CXD/MethodPokeSpot.cs
index 6d572a4db..d9b7e8f95 100644
--- a/PKHeX.Core/Legality/RNG/CXD/MethodPokeSpot.cs
+++ b/PKHeX.Core/Legality/RNG/CXD/MethodPokeSpot.cs
@@ -258,7 +258,7 @@ public static uint GetRandomPID(uint id32, in EncounterCriteria criteria, byte g
                 continue;
             }
             var pid = GetPIDRegular(ref seed);
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (criteria.IsSpecifiedGender() && !criteria.IsSatisfiedGender(EntityGender.GetFromPIDAndRatio(pid, gender)))
                 continue;
diff --git a/PKHeX.Core/Legality/RNG/ClassicEra/Gen3/GenerateMethodH.cs b/PKHeX.Core/Legality/RNG/ClassicEra/Gen3/GenerateMethodH.cs
index c9c7e85ee..13c4cf0cc 100644
--- a/PKHeX.Core/Legality/RNG/ClassicEra/Gen3/GenerateMethodH.cs
+++ b/PKHeX.Core/Legality/RNG/ClassicEra/Gen3/GenerateMethodH.cs
@@ -98,7 +98,7 @@ public static void SetRandomUnown<T>(this T enc, PK3 pk, in EncounterCriteria cr
                     continue;
 
                 // Check the nature is what the user requested.
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     break;
 
                 var iv32 = ClassicEraRNG.GetSequentialIVs(ref seed);
@@ -132,12 +132,12 @@ public bool SetFromIVs(PK3 pk, PersonalInfo3 pi, in EncounterCriteria criteria,
                 var a = LCRNG.Next16(ref s);
                 var b = LCRNG.Next16(ref s);
                 var pid = GetPIDRegular(a, b);
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 {
                     // Try again as Method 2 (AB-DE)
                     var o = seed >> 16;
                     pid = GetPIDRegular(o, a);
-                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                         continue;
                     seed = LCRNG.Prev(seed);
                 }
@@ -176,7 +176,7 @@ public bool SetFromIVs(PK3 pk, PersonalInfo3 pi, in EncounterCriteria criteria,
                 var a = LCRNG.Next16(ref s);
                 var b = LCRNG.Next16(ref s);
                 var pid = GetPIDRegular(a, b);
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     continue;
 
                 var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
@@ -219,12 +219,12 @@ public bool SetFromIVsUnown(PK3 pk, in EncounterCriteria criteria)
                 var a = LCRNG.Next16(ref s);
                 var b = LCRNG.Next16(ref s);
                 var pid = GetPIDUnown(a, b);
-                if ((criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25))) || EntityPID.GetUnownForm3(pid) != enc.Form)
+                if ((criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid)) || EntityPID.GetUnownForm3(pid) != enc.Form)
                 {
                     // Try again as Method 2 (BA-DE)
                     var o = seed >> 16;
                     pid = GetPIDUnown(o, a);
-                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                    if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                         continue;
                     var form = EntityPID.GetUnownForm3(pid);
                     if (form != enc.Form)
@@ -252,7 +252,7 @@ public bool SetFromIVsUnown(PK3 pk, in EncounterCriteria criteria)
                 var a = LCRNG.Next16(ref s);
                 var b = LCRNG.Next16(ref s);
                 var pid = GetPIDUnown(a, b);
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     continue;
                 var form = EntityPID.GetUnownForm3(pid);
                 if (form != enc.Form)
diff --git a/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodJ.cs b/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodJ.cs
index 4c51b327b..e5598f64c 100644
--- a/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodJ.cs
+++ b/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodJ.cs
@@ -125,7 +125,7 @@ public bool SetFromIVsJ(PK4 pk, PersonalInfo4 pi, in EncounterCriteria criteria,
                 var pid = GetPIDRegular(a, b);
                 if (criteria.Shiny.IsShiny() != ShinyUtil.GetIsShiny3(id32, pid))
                     continue;
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     continue;
 
                 var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
diff --git a/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodK.cs b/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodK.cs
index 9bff9423a..dd5b777bd 100644
--- a/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodK.cs
+++ b/PKHeX.Core/Legality/RNG/ClassicEra/Gen4/GenerateMethodK.cs
@@ -126,7 +126,7 @@ public bool SetFromIVsK(PK4 pk, PersonalInfo4 pi, in EncounterCriteria criteria,
                 var a = LCRNG.Next16(ref s);
                 var b = LCRNG.Next16(ref s);
                 var pid = GetPIDRegular(a, b);
-                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                     continue;
 
                 var gender = EntityGender.GetFromPIDAndRatio(pid, gr);
diff --git a/PKHeX.Core/MysteryGifts/PGT.cs b/PKHeX.Core/MysteryGifts/PGT.cs
index 85ad4053a..8c08d6702 100644
--- a/PKHeX.Core/MysteryGifts/PGT.cs
+++ b/PKHeX.Core/MysteryGifts/PGT.cs
@@ -171,7 +171,7 @@ private static void SetPINGAManaphy(PK4 pk4, in EncounterCriteria criteria, ITra
             var a = LCRNG.Next16(ref seed);
             var b = LCRNG.Next16(ref seed);
             var pid = (b << 16) | a;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             var c = LCRNG.Next15(ref seed);
             var d = LCRNG.Next15(ref seed);
@@ -209,7 +209,7 @@ private static bool TrySetManaphyFromIVs(PK4 pk4, in EncounterCriteria criteria,
             // Check for anti-shiny.
             var xor = (a ^ b) >> 3;
             bool arng = false;
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
             {
                 while (true)
                 {
@@ -221,7 +221,7 @@ private static bool TrySetManaphyFromIVs(PK4 pk4, in EncounterCriteria criteria,
                     arng = true;
                     break;
                 }
-                if (!criteria.IsSatisfiedNature((Nature)(pid % 25)))
+                if (!criteria.IsSatisfiedNature(pid))
                     continue;
             }
 
@@ -371,7 +371,7 @@ private static uint GetPID(PK4 pk4, PersonalInfo4 pi, in EncounterCriteria crite
                     break;
                 pid = ARNG.Next(pid);
             }
-            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature((Nature)(pid % 25)))
+            if (criteria.IsSpecifiedNature() && !criteria.IsSatisfiedNature(pid))
                 continue;
             if (EntityGender.GetFromPIDAndRatio(pid, gr) != gender)
                 continue;