Not much is known about Cyndaquil's big brother, however, he does appear to be friends with Charmeleon in another comic! He really likes to break the ice and keep things "lit" with Charmeleon as well. I'm pretty sure Quilava's treating Croconaw and Bayleef the same way as he treats Charmander's big brother. 

I'm looking for a mid-high pitched teenager voice for Quilava.

(Quilava only says one line in this episode, but of course, if you get cast for this role, (And that goes the same with everyone else who got cast with every other role) be prepared to stick around for future projects as you may never know when I might work on the other comics that feature Quilava!)