diff --git a/PKHeX.Core/Game/Enums/RegionID.cs b/PKHeX.Core/Game/Enums/Region3DSIndex.cs
similarity index 88%
rename from PKHeX.Core/Game/Enums/RegionID.cs
rename to PKHeX.Core/Game/Enums/Region3DSIndex.cs
index 9baed0d01..3d04a6e12 100644
--- a/PKHeX.Core/Game/Enums/RegionID.cs
+++ b/PKHeX.Core/Game/Enums/Region3DSIndex.cs
@@ -3,7 +3,7 @@
     /// <summary>
     /// 3DS Console Region Identifiers used for Generation 6 &amp; 7 Mystery Gifts
     /// </summary>
-    public enum RegionID : byte
+    public enum Region3DSIndex : byte
     {
         None = 0,
         Japan = 1,
diff --git a/PKHeX.Core/Legality/Encounters/Verifiers/MysteryGiftRestriction.cs b/PKHeX.Core/Legality/Encounters/Verifiers/MysteryGiftRestriction.cs
index ff5d39d6d..8cf39f583 100644
--- a/PKHeX.Core/Legality/Encounters/Verifiers/MysteryGiftRestriction.cs
+++ b/PKHeX.Core/Legality/Encounters/Verifiers/MysteryGiftRestriction.cs
@@ -20,12 +20,12 @@ public enum MysteryGiftRestriction
         RegionBase = LangKorean,
         LangRestrict = LangJapanese | LangEnglish | LangFrench | LangItalian | LangGerman | LangSpanish | LangKorean,
 
-        RegJP = RegionBase << RegionID.Japan,
-        RegNA = RegionBase << RegionID.NorthAmerica,
-        RegEU = RegionBase << RegionID.Europe,
-        RegZH = RegionBase << RegionID.China,
-        RegKO = RegionBase << RegionID.Korea,
-        RegTW = RegionBase << RegionID.Taiwan,
+        RegJP = RegionBase << Region3DSIndex.Japan,
+        RegNA = RegionBase << Region3DSIndex.NorthAmerica,
+        RegEU = RegionBase << Region3DSIndex.Europe,
+        RegZH = RegionBase << Region3DSIndex.China,
+        RegKO = RegionBase << Region3DSIndex.Korea,
+        RegTW = RegionBase << Region3DSIndex.Taiwan,
 
         RegionRestrict = RegJP | RegNA | RegEU | RegZH | RegKO | RegTW,
 
@@ -56,7 +56,7 @@ public static int GetSuggestedLanguage(this MysteryGiftRestriction value)
 
         public static int GetSuggestedRegion(this MysteryGiftRestriction value)
         {
-            for (int i = (int)RegionID.Japan; i <= (int)RegionID.Taiwan; i++)
+            for (int i = (int)Region3DSIndex.Japan; i <= (int)Region3DSIndex.Taiwan; i++)
             {
                 if (value.HasFlagFast((MysteryGiftRestriction)((int)MysteryGiftRestriction.RegionBase << i)))
                     return i;
diff --git a/PKHeX.Core/Legality/Restrictions/Vivillon3DS.cs b/PKHeX.Core/Legality/Restrictions/Vivillon3DS.cs
index 4a4f91dd9..b3ddc2fc6 100644
--- a/PKHeX.Core/Legality/Restrictions/Vivillon3DS.cs
+++ b/PKHeX.Core/Legality/Restrictions/Vivillon3DS.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using static PKHeX.Core.Region3DSFlags;
 
 namespace PKHeX.Core
 {
@@ -37,40 +38,29 @@ internal FormSubregionTable(byte form, byte[] regions)
         /// <summary>
         /// List of valid regions as bitflags indexed by Vivillon form.
         /// </summary>
-        private static readonly RegionFlags[] VivillonRegionTable =
+        private static readonly Region3DSFlags[] VivillonRegionTable =
         {
-            /* 0 Icy Snow    */ RegionFlags.Americas | RegionFlags.Europe,
-            /* 1 Polar       */ RegionFlags.Americas | RegionFlags.Europe | RegionFlags.China,
-            /* 2 Tundra      */ RegionFlags.Japan | RegionFlags.Europe,
-            /* 3 Continental */ RegionFlags.Americas | RegionFlags.Europe | RegionFlags.China | RegionFlags.Korea | RegionFlags.Taiwan,
-            /* 4 Garden      */ RegionFlags.Europe,
-            /* 5 Elegant     */ RegionFlags.Japan,
-            /* 6 Meadow      */ RegionFlags.Europe,
-            /* 7 Modern      */ RegionFlags.Americas,
-            /* 8 Marine      */ RegionFlags.Americas | RegionFlags.Europe,
-            /* 9 Archipelago */ RegionFlags.Americas | RegionFlags.Europe,
-            /*10 High Plains */ RegionFlags.Americas | RegionFlags.Europe | RegionFlags.China,
-            /*11 Sandstorm   */ RegionFlags.Americas | RegionFlags.Europe,
-            /*12 River       */ RegionFlags.Europe,
-            /*13 Monsoon     */ RegionFlags.Japan | RegionFlags.Europe | RegionFlags.China | RegionFlags.Taiwan,
-            /*14 Savanna     */ RegionFlags.Americas,
-            /*15 Sun         */ RegionFlags.Americas | RegionFlags.Europe,
-            /*16 Ocean       */ RegionFlags.Americas | RegionFlags.Europe,
-            /*17 Jungle      */ RegionFlags.Americas | RegionFlags.Europe,
+            /* 0 Icy Snow    */ Americas | Europe,
+            /* 1 Polar       */ Americas | Europe | China,
+            /* 2 Tundra      */ Japan    | Europe,
+            /* 3 Continental */ Americas | Europe | China | Korea | Taiwan,
+            /* 4 Garden      */            Europe,
+            /* 5 Elegant     */ Japan,
+            /* 6 Meadow      */            Europe,
+            /* 7 Modern      */ Americas,
+            /* 8 Marine      */ Americas | Europe,
+            /* 9 Archipelago */ Americas | Europe,
+            /*10 High Plains */ Americas | Europe | China,
+            /*11 Sandstorm   */ Americas | Europe,
+            /*12 River       */            Europe,
+            /*13 Monsoon     */ Japan    | Europe | China | Taiwan,
+            /*14 Savanna     */ Americas,
+            /*15 Sun         */ Americas | Europe,
+            /*16 Ocean       */ Americas | Europe,
+            /*17 Jungle      */ Americas | Europe,
         };
 
-        [Flags]
-        public enum RegionFlags : ushort
-        {
-            Japan = 1,
-            Americas = 1 << 1,
-            Europe = 1 << 2,
-            China = 1 << 4,
-            Korea = 1 << 5,
-            Taiwan = 1 << 6,
-        };
-
-        public static RegionFlags GetConsoleRegionFlag(int consoleRegion) => (RegionFlags)(1 << consoleRegion);
+        public static Region3DSFlags GetConsoleRegionFlag(int consoleRegion) => (Region3DSFlags)(1 << consoleRegion);
 
         /// <summary>
         /// List of valid countries for each Vivillon form.
@@ -271,4 +261,20 @@ private static int GetPattern(byte country)
             return Math.Max(0, form);
         }
     }
+
+    /// <summary>
+    /// Console Region Flags for the 3DS.
+    /// </summary>
+    /// <remarks>Not to be confused with <see cref="Region3DSIndex"/>.</remarks>
+    [Flags]
+    public enum Region3DSFlags : ushort
+    {
+        None,
+        Japan = 1,
+        Americas = 1 << 1,
+        Europe = 1 << 2,
+        China = 1 << 4,
+        Korea = 1 << 5,
+        Taiwan = 1 << 6,
+    }
 }
diff --git a/PKHeX.Core/PKM/Shared/IRegionOrigin.cs b/PKHeX.Core/PKM/Shared/IRegionOrigin.cs
index 2ff3874ff..cfc351681 100644
--- a/PKHeX.Core/PKM/Shared/IRegionOrigin.cs
+++ b/PKHeX.Core/PKM/Shared/IRegionOrigin.cs
@@ -3,7 +3,7 @@
     public interface IRegionOrigin
     {
         /// <summary> Console hardware region. </summary>
-        /// <see cref="RegionID"/>
+        /// <see cref="Region3DSIndex"/>
         byte ConsoleRegion { get; set; }
         /// <summary> Console's configured Country via System Settings. </summary>
         byte Country { get; set; }