diff --git a/data/v2/csv/pokemon_evolution.csv b/data/v2/csv/pokemon_evolution.csv
index e912d0863..b4d580d5b 100644
--- a/data/v2/csv/pokemon_evolution.csv
+++ b/data/v2/csv/pokemon_evolution.csv
@@ -364,7 +364,7 @@ id,evolved_species_id,evolution_trigger_id,trigger_item_id,minimum_level,gender_
 364,471,1,,,,640,,,,,,,,,,,,0,0,0,,,,,,
 365,476,1,,,,629,,,,,,,,,,,,0,0,0,,,,,,
 366,462,1,,,,771,,,,,,,,,,,,0,0,0,,,,,,
-367,105,1,,28,,,,night,,,,,,,,,,0,0,0,,,,,,
+367,105,1,,28,,,,night,,,,,,,,,,0,0,0,7,,,,,
 368,462,1,,,,789,,,,,,,,,,,,0,0,0,,,,,,
 369,476,1,,,,771,,,,,,,,,,,,0,0,0,,,,,,
 370,476,1,,,,789,,,,,,,,,,,,0,0,0,,,,,,
@@ -444,26 +444,26 @@ id,evolved_species_id,evolution_trigger_id,trigger_item_id,minimum_level,gender_
 445,887,1,,60,,,,,,,,,,,,,,0,0,0,,,,,,
 446,892,6,,,,,,,,,,,,,,,,0,0,0,,,,,,
 447,892,7,,,,,,,,,,,,,,,,0,0,0,,,,,,
-448,28,3,885,,,,,,,,,,,,,,,0,0,0,,,,,,
-449,38,3,885,,,,,,,,,,,,,,,0,0,0,,,,,,
-450,53,1,,,,,,,,,160,,,,,,,0,0,0,,,,,,
-451,863,1,,28,,,,,,,,,,,,,,0,0,0,,,,,,
-452,80,3,1633,,,,,,,,,,,,,,,0,0,0,,,,,,
-453,199,3,1643,,,,,,,,,,,,,,,0,0,0,,,,,,
-454,865,8,,,,,,,,,,,,,,,,0,0,0,,,,,,
-455,866,1,,42,,,,,,,,,,,,,,0,0,0,,,,,,
-456,864,1,,38,,,,,,,,,,,,,,0,0,0,,,,,,
-457,862,1,,35,,,,night,,,,,,,,,,0,0,0,,,,,,
-458,555,3,885,,,,,,,,,,,,,,,0,0,0,,,,,,
-459,867,9,,,,,,,,,,,,,,,,0,0,0,,,,,,49
+448,28,3,885,,,,,,,,,,,,,,,0,0,0,,10101,,,,
+449,38,3,885,,,,,,,,,,,,,,,0,0,0,,10103,,,,
+450,53,1,,,,,,,,,160,,,,,,,0,0,0,,10107,,,,
+451,863,1,,28,,,,,,,,,,,,,,0,0,0,,10161,,,,
+452,80,3,1633,,,,,,,,,,,,,,,0,0,0,,10164,,,,
+453,199,3,1643,,,,,,,,,,,,,,,0,0,0,,10164,,,,
+454,865,8,,,,,,,,,,,,,,,,0,0,0,,10166,,,,
+455,866,1,,42,,,,,,,,,,,,,,0,0,0,,10168,,,,
+456,864,1,,38,,,,,,,,,,,,,,0,0,0,,10173,,,,
+457,862,1,,35,,,,night,,,,,,,,,,0,0,0,,10175,,,,
+458,555,3,885,,,,,,,,,,,,,,,0,0,0,,10176,,,,
+459,867,9,,,,,,,,,,,,,,,,0,0,0,,10179,,,,49
 460,745,1,,25,,,,dusk,,,,,,,,,,0,0,0,,,,,,
-461,20,1,,20,,,,night,,,,,,,,,,0,0,0,,,,,,
+461,20,1,,20,,,,night,,,,,,,,,,0,0,0,,10091,,,,
 462,899,11,,,,,,,,,,,,,,,,0,0,0,,,828,20,,
 463,900,3,10001,,,,,,,,,,,,,,,0,0,0,,,,,,
 464,901,3,10002,,,,,full-moon,,,,,,,,,,0,0,0,,,,,,
-465,902,13,,,,,,,,,,,,,,,,0,0,0,,,,,,294
-466,903,1,,,,,303,day,,,,,,,,,,0,0,0,,,,,,
-467,904,12,,,,,,,,,,,,,,,,0,0,0,,,839,20,,
+465,902,13,,,,,,,,,,,,,,,,0,0,0,,10247,,,,294
+466,903,1,,,,,303,day,,,,,,,,,,0,0,0,,10235,,,,
+467,904,12,,,,,,,,,,,,,,,,0,0,0,,10234,839,20,,
 468,907,1,,16,,,,,,,,,,,,,,0,0,0,,,,,,
 469,908,1,,36,,,,,,,,,,,,,,0,0,0,,,,,,
 470,910,1,,16,,,,,,,,,,,,,,0,0,0,,,,,,
@@ -501,7 +501,7 @@ id,evolved_species_id,evolution_trigger_id,trigger_item_id,minimum_level,gender_
 502,972,1,,30,,,,night,,,,,,,,,,0,0,0,,,,,,
 503,975,3,885,,,,,,,,,,,,,,,0,0,0,,,,,,
 504,979,14,,,,,,,,,,,,,,,,0,0,0,,,889,20,,
-505,980,1,,20,,,,,,,,,,,,,,0,0,0,,,,,,
+505,980,1,,20,,,,,,,,,,,,,,0,0,0,,10253,,,,
 506,981,1,,,,,,,888,,,,,,,,,0,0,0,,,,,,
 507,982,1,,,,,,,887,,,,,,,,,0,0,0,,,,,,
 508,983,15,,,,,,,,,,,,,,,,0,0,0,,,,,,
@@ -510,5 +510,29 @@ id,evolved_species_id,evolution_trigger_id,trigger_item_id,minimum_level,gender_
 511,1000,16,,,,,,,,,,,,,,,,0,0,0,,,,,,
 512,740,3,885,,,,,,,,,,,,,,,0,0,0,,,,,,
 514,476,3,83,,,,,,,,,,,,,,,0,0,0,,,,,,
-515,904,1,,,,,,,839,,,,,,,,,0,0,0,,,,,,
-516,904,14,,,,,,,,,,,,,,,,0,0,0,,,839,20,,
+515,904,1,,,,,,,839,,,,,,,,,0,0,0,,10234,,,,
+516,904,14,,,,,,,,,,,,,,,,0,0,0,,10234,839,20,,
+517,26,3,83,,,,,,,,,,,,,,,0,0,0,7,,,,,
+518,51,1,,26,,,,,,,,,,,,,,0,0,0,,10105,,,,
+519,75,1,,25,,,,,,,,,,,,,,0,0,0,,10109,,,,
+520,76,2,,,,,,,,,,,,,,,,0,0,0,,10110,,,,
+521,89,1,,38,,,,,,,,,,,,,,0,0,0,,10112,,,,
+522,103,3,85,,,,,,,,,,,,,,,0,0,0,7,,,,,
+523,59,3,82,,,,,,,,,,,,,,,0,0,0,,10229,,,,
+524,101,3,85,,,,,,,,,,,,,,,0,0,0,,10231,,,,
+525,156,1,,17,,,,,,,,,,,,,,0,0,0,9,,,,,
+526,157,1,,36,,,,,,,,,,,,,,0,0,0,9,,,,,
+527,503,1,,36,,,,,,,,,,,,,,0,0,0,9,,,,,
+528,549,3,80,,,,,,,,,,,,,,,0,0,0,9,,,,,
+529,571,1,,30,,,,,,,,,,,,,,0,0,0,,10238,,,,
+530,628,1,,54,,,,,,,,,,,,,,0,0,0,9,,,,,
+531,705,1,,40,,,,,,,,,,,,,,0,0,0,9,,,,,
+532,706,1,,50,,,,,,,,,,,,,,1,0,0,,10241,,,,
+533,713,1,,37,,,,,,,,,,,,,,0,0,0,9,,,,,
+534,724,1,,36,,,,,,,,,,,,,,0,0,0,9,,,,,
+535,78,1,,40,,,,,,,,,,,,,,0,0,0,,10162,,,,
+536,110,1,,35,,,,,,,,,,,,,,0,0,0,8,,,,,
+537,122,1,,,,,,,102,,,,,,,,,0,0,0,8,,,,,
+538,264,1,,20,,,,,,,,,,,,,,0,0,0,,10174,,,,
+539,892,3,1675,,,,,,,,,,,,,,,0,0,0,,,,,,
+540,892,3,1676,,,,,,,,,,,,,,,0,0,0,,,,,,
diff --git a/pokemon_v2/migrations/0026_alter_pokemonevolution_base_form.py b/pokemon_v2/migrations/0026_alter_pokemonevolution_base_form.py
new file mode 100644
index 000000000..491479062
--- /dev/null
+++ b/pokemon_v2/migrations/0026_alter_pokemonevolution_base_form.py
@@ -0,0 +1,26 @@
+# Generated by Django 5.2.10 on 2026-02-08 17:36
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pokemon_v2", "0025_pokemonstatpast"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="pokemonevolution",
+            name="base_form",
+            field=models.ForeignKey(
+                blank=True,
+                help_text="Specific form required for evolution (null = any form)",
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="base_form_evolutions",
+                to="pokemon_v2.pokemon",
+            ),
+        ),
+    ]
diff --git a/pokemon_v2/models.py b/pokemon_v2/models.py
index 5fd7c2ae5..f18da3257 100644
--- a/pokemon_v2/models.py
+++ b/pokemon_v2/models.py
@@ -1706,7 +1706,7 @@ class PokemonEvolution(HasEvolutionTrigger, HasGender):
     )
 
     base_form = models.ForeignKey(
-        "PokemonSpecies",
+        "Pokemon",
         blank=True,
         null=True,
         related_name="base_form_evolutions",
diff --git a/pokemon_v2/serializers.py b/pokemon_v2/serializers.py
index 636cdb20f..dcd654188 100644
--- a/pokemon_v2/serializers.py
+++ b/pokemon_v2/serializers.py
@@ -5637,8 +5637,8 @@ class PokemonEvolutionSerializer(serializers.ModelSerializer):
     trade_species = PokemonSpeciesSummarySerializer()
     location = LocationSummarySerializer()
     trigger = EvolutionTriggerSummarySerializer(source="evolution_trigger")
-    region_id = RegionSummarySerializer(source="region")
-    base_form_id = PokemonSpeciesSummarySerializer(source="base_form")
+    region = RegionSummarySerializer()
+    base_form = PokemonSummarySerializer()
     used_move = MoveSummarySerializer()
 
     class Meta:
@@ -5663,8 +5663,8 @@ class Meta:
             "time_of_day",
             "trade_species",
             "turn_upside_down",
-            "region_id",
-            "base_form_id",
+            "region",
+            "base_form",
             "used_move",
             "min_move_count",
             "min_steps",
@@ -5726,8 +5726,8 @@ class Meta:
                                         "trigger",
                                         "turn_upside_down",
                                         "used_move",
-                                        "region_id",
-                                        "base_form_id",
+                                        "region",
+                                        "base_form",
                                     ],
                                     "properties": {
                                         "gender": {
@@ -5879,7 +5879,7 @@ class Meta:
                                             "type": "",
                                             "nullable": True,
                                         },
-                                        "region_id": {
+                                        "region": {
                                             "type": "object",
                                             "nullable": True,
                                             "required": ["name", "url"],
@@ -5891,7 +5891,7 @@ class Meta:
                                                 },
                                             },
                                         },
-                                        "base_form_id": {
+                                        "base_form": {
                                             "type": "object",
                                             "nullable": True,
                                             "required": ["name", "url"],
diff --git a/pokemon_v2/tests.py b/pokemon_v2/tests.py
index 927f3b6c6..f975efb05 100644
--- a/pokemon_v2/tests.py
+++ b/pokemon_v2/tests.py
@@ -1861,6 +1861,8 @@ def setup_pokemon_evolution_data(
         relative_physical_stats=0,
         needs_overworld_rain=False,
         turn_upside_down=False,
+        region=None,
+        base_form=None,
         needs_multiplayer=False,
         used_move=None,
         min_move_count=None,
@@ -1895,6 +1897,8 @@ def setup_pokemon_evolution_data(
             trade_species=trade_species,
             needs_overworld_rain=needs_overworld_rain,
             turn_upside_down=turn_upside_down,
+            region=region,
+            base_form=base_form,
             needs_multiplayer=needs_multiplayer,
             used_move=used_move,
             min_move_count=min_move_count,