In this, Wonder Woman adopts you or a Sonic character. (Let me know if you want Marvel instead)

Scenario 1: You washed up on the shores of Themyscira as a baby/kid, where Diana found you and got permission from her mother to raise you as her own. When she left to go protect the world, she took you with her.

Scenario 2: Diana finds you abandoned in the woods and returns to her house with you. When you grow up, she leaves it up to you if you want to follow her footsteps as an Amazon warrior. Will you do it?

Scenario 3: Make it up