Whither Mack Brain?

A fellow Isengarder has been encouraging me with a generous offer to help edit Rebar For Tootsie Rolls into a form that might actually be publishable. (In case you're wondering, the lack of continuity in the storyline would continue: the book design would feature a chapter, then an image of a waterlogged, torn Pulp magazine cover, then the next chapter. )

But there's a problem. Mack's last name: Brain.

It's not the best, I'm forced to agree. It was slightly funny once, but it's not an good enduring character name. It was written long before I keep writing these stories, and right now has the effect of a slightly funny band name that gets less funny every time you repeat it, like Bunny and the Hoptones or Led Zepplin or something.

So I need your help: what are your suggestions for Mack's last name?

Worse, the current chapter turns on his name and is being delayed!