So I see a warlock, a binder, an evoker, and a fighter-rogue (or martial rogue). Looks like you guys are high on magic, low on front-end meat shields and healers.
So, I could play one of the following as per what the group finds most helpful and interesting:
Brottor the Dwarven Fighter who wants to be a paladin or knight one day.
Lars Grimhelm the Human Barbarian
A paladin w/ the PHB 2 charging smite ability instead of a mount
A druid w/the PHB 2 shapeshift ability instead of an animal companion
A monk