diff --git a/learn_sql_model/factories/pet.py b/learn_sql_model/factories/pet.py
new file mode 100644
index 0000000..681dac1
--- /dev/null
+++ b/learn_sql_model/factories/pet.py
@@ -0,0 +1,16 @@
+from polyfactory.factories.pydantic_factory import ModelFactory
+
+from learn_sql_model.models.hero import Hero
+from learn_sql_model.models.pet import Pet
+
+__relationship__ = [Hero]
+
+
+class PetFactory(ModelFactory[Pet]):
+    __model__ = Pet
+    __set_as_default_factory_for_type__ = True
+    id = None
+
+    @classmethod
+    def name(cls) -> str:
+        return cls.__faker__.first_name()
diff --git a/learn_sql_model/models/pet.py b/learn_sql_model/models/pet.py
index bc167e3..a9b4314 100644
--- a/learn_sql_model/models/pet.py
+++ b/learn_sql_model/models/pet.py
@@ -1,16 +1,14 @@
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 
-from sqlmodel import Field
+from sqlmodel import Field, Relationship
 
 from learn_sql_model.models.fast_model import FastModel
 
+if TYPE_CHECKING:
+    from learn_sql_model.models.hero import Hero
+
 
 class Pet(FastModel, table=True):
     id: Optional[int] = Field(default=None, primary_key=True)
     name: str = "Jim"
-
-
-#     age: Optional[int] = None
-
-#     hero_id: int = Field(default=None, foreign_key="hero.id")
-#     hero: Optional[Hero] = Relationship(back_populates="pets")
+    hero: "Hero" = Relationship(back_populates="pet")