Holk. He's not above flaming or being just plain playful, but he always has this sense of maturity about him, something I deeply respect. His views are often accurate, and his activity in Bean Bags is certainly one of the most commendable.
Modern Algebra. He's calm and mature even in the face of stupidity in many many aggravating topics in the Game Creation section, and he often tries to be the peacekeeper who leads RMRK in a forward direction. He's a super moderator for a reason. :3