A lot of artists on Tumblr have been joining in on a meme where you go to the Super Mario Wiki, hit "random page" and draw whatever you wind up on.
Big Whomp from New Super Mario Bros. 2
Koopa Beach 2, Super Mario Kart
Spike Cannon, Wario Land 4
Invisighoul, Yoshi's Island DS
Tiki Bomber, Donkey Kong Country Returns
K-9, Super Mario RPG
Luigi, from all of the games ever made
Link
Hlavco
I love this idea, I'm gonna have to join in at some point.