Here's a couple of possibilities - Squiggy Squirrel, Nutty T. Squirrel, Minny Squirrel (although that could constitute and infringement on Minnie and Paul), Rally Squirrel, and the obvious Hammy T. Squirrel which is borrowed from Over the Hedge. However, I think his name is just a single name...kind of like Cher, Madonna....and now Bomba. His name is just Bomba.