Browsing though some of the others threads has left me slightly concerned with our own portraits in an area i seem to have neglected to crit this far-
CK- your thief's design and rendering so far is very nice, however, in his current form...i'm not getting thief from him, at all. At the moment I would think he was perhaps some sort of elfin soldier or guard as he stands very alert and upright, theres nothing all that sneaky or devious about him outside of his pointed anatomy, the character himself doesnt tell us much. The fact that his good/evil versions are pretty much identical means we dont get much insight into his personality or how he is different beyond a palette swap.
Note that im of course not suggesting a wild action pose- the group theme is more subtle- but we also need to be able to see a fair chunk of this mans story without reading his blurb, integrate it into his costume and weaponry if needs be - this is first and foremost a character design task not a portrait illustration one.
I know you probably have something awesome up your sleeve that i've not seen yet as i've been away, If you have any of that behind closed doors hit me up on messenger so my concerns can be alleviated!