diff --git a/PKHeX.Core/PKHeX.Core.csproj b/PKHeX.Core/PKHeX.Core.csproj
index 861bfa4db..dc2807c82 100644
--- a/PKHeX.Core/PKHeX.Core.csproj
+++ b/PKHeX.Core/PKHeX.Core.csproj
@@ -605,6 +605,7 @@
     <None Remove="Resources\text\script\flags_pt_en.txt" />
     <None Remove="Resources\text\script\flags_rs_en.txt" />
     <None Remove="Resources\text\script\flags_sm_en.txt" />
+    <None Remove="Resources\text\script\flags_usum_en.txt" />
     <None Remove="Resources\text\script\flags_xy_en.txt" />
     <None Remove="Resources\text\zh\lang_zh.txt" />
     <None Remove="Resources\text\zh\LegalityCheckStrings_zh.txt" />
@@ -1246,6 +1247,7 @@
     <EmbeddedResource Include="Resources\text\script\flags_pt_en.txt" />
     <EmbeddedResource Include="Resources\text\script\flags_rs_en.txt" />
     <EmbeddedResource Include="Resources\text\script\flags_sm_en.txt" />
+    <EmbeddedResource Include="Resources\text\script\flags_usum_en.txt" />
     <EmbeddedResource Include="Resources\text\script\flags_xy_en.txt" />
     <EmbeddedResource Include="Resources\text\zh\lang_zh.txt" />
     <EmbeddedResource Include="Resources\text\zh\LegalityCheckStrings_zh.txt" />
diff --git a/PKHeX.Core/Resources/text/script/flags_usum_en.txt b/PKHeX.Core/Resources/text/script/flags_usum_en.txt
new file mode 100644
index 000000000..d7c2bbf02
--- /dev/null
+++ b/PKHeX.Core/Resources/text/script/flags_usum_en.txt
@@ -0,0 +1,37 @@
+4420	Articuno Captured
+4421	Zapdos Captured
+4422	Moltres Captured
+4423	Mewtwo Captured
+4260	(US) Raikou Captured
+4261	(UM) Entei Captured
+4262	Suicune Captured
+4263	(UM) Lugia Captured
+4264	(US) Ho-Oh Captured
+4285	Regirock Captured
+4286	Regice Captured
+4287	Registeel Captured
+4283	(UM) Latias Captured
+4284	(US) Latios Captured
+4289	(UM) Kyogre Captured
+4288	(US) Groudon Captured
+4290	Rayquaza Captured
+4265	Uxie Captured
+4266	Mesprit Captured
+4267	Azelf Captured
+4268	(US) Dialga Captured
+4269	(UM) Palkia Captured
+4270	(US) Heatran Captured
+4271	(UM) Regigigas Captured
+4272	Giratina Captured
+4273	Cresselia Captured
+4274	Cobalion Captured
+4275	Terrakion Captured
+4276	Virizion Captured
+4277	(US) Tornadus Captured
+4278	(UM) Thundurus Captured
+4279	(US) Reshiram Captured
+4280	(UM) Zekrom Captured
+4281	Landorus Captured
+4282	Kyurem Captured
+4424	(US) Xerneas Captured
+4425	(UM) Yveltal Captured
\ No newline at end of file