Dude, Dude on steroids, Undead, Ghost, Crystal Dude, Yeti. 360x330 pixels, 76 frames each. 2d renderings of 3d "craft" style figures.
Transparent background. 6 characters so far, more coming soon (plus vehicles and props).
Each character has the same set of actions: run, puch, look around, fall, get up, kick, shoulder shrug, jumb, cheer.

Interactive demo of all actions: http://sprite.slicker.me