The Sniper seems pretty relaxed and cool headed but can still can have some good fun (at the expense at other's craniums), the Heavy looks like a really friendly guy but I'm pretty sure the only activities he'd want to do would involve a great damage to my health such as eating unhealthy quantities of Sandwiches Chocolate bars and Steak, Boxing, Wrestling, Bear punching, Bear Wrestling, People Wrestling, Bear Boxing and Bear Steak eating contest. Also, since TF2 takes place some where around the mid 20th Century and The Heavy is Russian I think it'd be interesting to hear what it was like growing up in the U.S.S.R. there for him and what his political ideology is now. The Engineer seems to have a similar general attitude to that of the Sniper but more calm and more intellectual.