Solo #1 (2004) written by Darwyn Cookie, art by Tim Sale

Peter.

Anatomy of a Gremlin

Jarvis, hard at work

(from the cover of FOOM #6)

Mila.

Harley Quinn by Matt Taylor (thanks to Mondo)

(source)

Iceman is really good at college

Uncanny X-Men #145 (1981) written by Chris Claremont, pencils by Dave Cockrum, inks by Josef Rubinstein