Those are very nice!! Congrats!
I'd encourage you to have the artists post their DA or web pages here...people may well want to get on board with some of these.
My Deviant Art page link-link
CoH/V Fan Videos
agreed, if they're plannin on commissions anytime soon wouldn't be a bad idea to add the names to the list.
MA Arcs - #67636, #92202
deviantart page
Slag Heap: Why you hurt Guardian!? Guardian no hurt you!
Sadly neither have any plans to open up for commissions and I don't have any sites I could link here. Sorry guys!
Both look fantastic. Nice job on those colors 
These are *very* impressive. Your friend obviously has a strong control over proportion, layout, detail and style. We of the art forum are pleased to meet you and disappointed that there is not more to enjoy.
Your own color work is really nice as well, I could never get the hang of painterly style programs myself.
http://www.virtueverse.net/wiki/Massacre_Melanie -the original Fire/Dark Corruptor -
http://boards.cityofheroes.com/showthread.php?t=115217
The Guide to BURN
Just throwing up a couple of pictures of my current main character, Twilight Tromlui, done by a couple of friends.
First up is a WIP of her posing on a defeated Positron. What can I say, I enjoy going up against him in missions!
http://i148.photobucket.com/albums/s...ghtTromlui.gif
Second up is my avatar of her, done in OC. This was a collaboration. Friend sketched and inked, I coloured and shaded.
http://i148.photobucket.com/albums/s...lainAvatar.jpg
Hope ya'll like 'em!