Ones with weapons. ;) 

Personally, I prefer melee characters to ranged characters, or a blend of the two, but a purely melee character may not hold up well against some of the more offensively minded characters here. Almost everyone has some sort of ranged attack in addition to whatever melee skills they possess. 

If you'd like, we could do a practice fight with generic characters to help you get the feel of things before diving in headfirst.