Obama, intergalactic superhero

Frightened blue face. text says 'Zombie Sad'. There's also a crying smiley, which should be called a cryley, really.

Happy bear quits his job at the office

Crashing into Saturn in 1980. The captain was drunk. Also, it looks like daylight with clouds in space.

Green nuclear bunnies take over platypus-ville. The platypus knights are ready for the battle.

A pony tells a dinosaur to get back into the amusement fair

Just Gabe Newell. Or so he claims.

Green man with squiggly arms can't do his homework. Perfectly drawn.

A respectable red apple. Has a monocle, a moustache, and shoes. He's also got abstract arms that remind me of black pitchforks.

He's going to smash that banjo.

Professor Octopus :)

Hobbes floats in a bubble to Calvin