I would really love to interact more with Gin, he's delightfully creepy, but I really can't manage it with Komui for some reason. ^^; I would think Xellos, but they might just smile at each other for a while and get bored?
A-actually, I think Lacus would be fun. Pinged by Gin's evil but yet too optimistic/zen to back away slowly. She might prove fun for him? <3