dumb idea, but ima say it
Rubberband Man Zac.
May already be an idea, but oh well. I'll say it anyway.
He's made off of SEVERAL rubberbands. More HP he has, the more rubberbands, etc. He can pick up rubberbands to regen health. When he pulls himself back to launch himself, he turns into a rubber ball and a small slingshot is made, aiming at the direction (or something less creative). His ult, Let's Bounce!, he just turns into a rubber ball and bounces. Shrug.