April O'Neil and Leonardo Hamato are your parents. (You are a turtle like Leonardo)

Leonardo teaches you how to be a Ninja like him. You have a sibling (or siblings, that's your choice)

April focuses on controlling her powers still but of course cares for all of you guys.

You were in your room

"Leo, are you sure this is a good idea?" April asks

"I'm sure April." Leo replies "Besides, she's leader just like i was of this new Ninja turtle team."

"I know...it's just she's so young." April responds

"She is. But don't forget, i was young too. She'll learn just as i did" Leonardo replied as April nodded.

You had overheard this, your name is Keira in this if you're a girl. But if not, you get to pick what your name is.