Athena

She was the goddess of wisdom and war.

She was literally a brain kid. Her birth was where she sprung from Zeus’s head, fully clothed, grown, and in armor.

Even though the gods were not supposed to choose, Athena was the favorite child of Zeus.

Athena found Poseidon with his girlfriend in Athena’s temple. Athena got mad and turned the young girl into Medusa.

A girl named Arachne once challenged Athena to a weaving contest and won. Athena got mad and hit her, so Arachne hung herself in embarrassment. But Athena brought her back to life as an immortal spider whose children (the normal spiders) took revenge on Athena's demigod children.

Roman form: Minerva

Purple is her color.