Gecko: Young guy, 20 at the most. Short and skinny with closed cropped brown hair. One of those fancy watches novelty options about the size of a cellphone on his wrist, and a red shirt on. Heavily prone too mood swings, exhibiting the full effects of a sugar rush and then a down within an hour.
Zarn: Mid thirties. Some form of a light facial hair, a thin mustache or a hint of a goatee or something. Wearing either jeans or black slacks, and a long sleeved white button up shirt a few size too big. Very focused look in his eyes, with a permanent expression of slight surprise at events unfolding in front of him. Relatively hesitant to talk about issues he considers important, but unwilling to stop after he gets on about something.
Cheezy: Late twenties-early thirties. A full head of white or grey hair though. A veritable babbling brook of witty and not so witty observations, that may or may not be insightful, about whatever catches his interest. Prone to gesturing allot, backslapping, thumbs up, that sort of thing. Probably wearing a leather jacket for no particular reason. The catch is that this hyperactive personality is running even when no one is around, which probably convinces a few people to keep their distance.
Godwynn: Honestly, he just looks like a younger version of Dr. House to me.
Almost certainly all wrong of course.