Yeah, Boshi's a bad-ass :) It kinda sucks though, it seems like Nintendo is willing to just sort of abandon all the characters that were introduced in Mario RPG. I'm definitely going to miss Boshi.
What was the deal with Mario RPG, anyway? not only were Luigi and the Koopa Kids mysteriously abscent, but The Great Wario was missing as well.
Anyway, my favorite "baddie" is Wario, with Kamek and Lemmy Koopa tied for second.