What are some keshin(avatar) ideas for inazuma eleven go? Feel free to make up your own keshin.

I'm making a fanfiction called: Inazuma Eleven: G03. It's about the "GO" Raimon Team's children who take their place in the Raimon Eleven. (Tenma and Co. are old now.) Soooo, I'm having trouble thinking of some keshin ideas. A little help?

P.S.: I will cite you (or your username on fanpop) don't worry.