Zippo the Super Hippo

Zippo doesn't want to be an ordinary hippo. He wants to be super!
"Everyone has a super power," says his best friend Roxi. "You just have to work out what yours is."
Being good at swimming and splashing in mud aren't really superpowers though. Perhaps Zippo can fly like Roxi. But who's ever heard of a flying hippopotamus? Especially one...