Well, I play mostly doubles to best avoid items and only worrying about 2 other players seems better than being concerned about 3. I play online alot of you can't tell. Being Bowser, projectiles and lag in general is a major problem. I like DeDeDe because he's pretty well rounded. Great recovery, excellent throws not including the Down Throw chain grab, a pretty good projectile that acts as a barrier against other projectiles as well KOing in Sudden Death, great aerials, great ground game. His BAir ***** Sonic when I can land it, I've been seeing a lot of Sonic lately. Besides, his DTaunt and "crouch" are instant win.
Besides him and Wolf, I can play anyone reasonably well. If I do bad I usually character hop until I find one I can win with, lol. Yoshi and Jigs are usually the ones I try first if DeDeDe can't pull through.