Here is the artwork submitted by Roleplayers, be it character-based or independantly styled:

Character sketches by mintos:

Bakan

Commander Cyrax

ShadowHawk

Gryffin

Other Artwork:

A Smiley by David91

An Eagle by David91

Silver's dragon

A piccy by Verric

An evil sock-puppet by David

The squig chair

A 'crap black' pic by Verric

A 'crap white' pic by Verric

David's glove puppet

Another pic by Verric