Kirby 64 The Crystal Shards had Knife Kirby, Saw Kirby, Cannonball Kirby (and the cannon was damn hard to aim), Smoke Kirby (more like gunpowder).
Various games of Kirby have the small Kirby ability which allowed you to enter hard access places, the game that comes to mind right now is Kirby & the Amazing Mirror
Finally Stone Kirby changes forms depending of the game some included a golden Kirby statue, an Anvil form, Fish, and even a Snail.
Bear Kirby would be cool, i mean we got Mole Kirby already and that one was damn good.