Dimensions — Rachael Lucas

Lenny Staff's life runs on simple wheels in the oppressive city of Belltoh. That is, until his best friend Sara disappears mysteriously, his employer and hero Dr. Devi shuts down shop and the police find out that Lenny is illegally cybernetic... Enter Jax, a young man with a dimension travelling habit and a flare for riding hoverboard. He hates staying still, especially when someone else is making him do it. And when an evil form of corruption cramps him in a ring of nine worlds, he jumps through Lenny's window looking for help.  Together with seven other quirky adventurers, one from every dimension in the ring of nine, they travel dimensions to find out what is destroying their worlds, and why.