Colossus

The Russian Colossus is capable of transforming his body into "organic steel", a metallic form capable of great strength and invulnerability. He's also pretty handy with a paintbrush.

Moondragon

Moondragon is a powerful psychic, master martial artist, and manages to rock a bald head and make it work. A member of the Avengers for about 17 seconds, she's most often found in space hanging out with the Guardians of The Galaxy.

Jean Grey - UPDATED!

This is an update of Jean Grey's classic costume.

Lady Fantomex

Lady Fantomex has one of those great superhero names that tells you exactly what she is: a lady version of Fantomex. She pretty much just has the power to run well in a coat, and is a great marksman. Once a member of the Psylocke led Uncanny X-Force, I have no idea what's happened to her since... because modern comics are a terrible, badly-written mess.

Storm - Uncanny X-Force UPDATED!

This is an update of Storm's Uncanny X-Force/Marvel Now uniform.

Professor X

Professor X, or  Charles Xavier is the leader of the X-Men. The "world's most powerful telepath", he was originally wheelchair bound, then could walk, then was in a wheelchair again, then could walk AGAIN. Like most longstanding comic book characters he's been pretty much ruined and maligned by modern writer's, with the exception of a character saving stretch of X-Men Legacy comics by Mike Carey.

Juggernaut

Juggernaut, or Cain Marko, is literally the red-headed step-brother of Professor Charles Xavier, founder of the X-Men. Due to a magic gem he found while he and Xavier were serving in Korea he became the magical Avatar of the demon-lord Cytorrak, an unstoppable* 'juggernaut' with incredible strength and invulnerability. He wears a magic helmet that keeps out psychic powers; it's meant to be unbreakable, but literally every fight he has with the X-Men ends with the helmet breaking and one of their fifty telepaths frying his brain.

(*Character may be unstoppable in name only, and may in fact be frequently stopped by the likes of Spider-Man.)