Hmmm.
In my gaming group, there's one guy who is "heavy" , but he's also very tall, hulking and someone I'd want on my side in a fight. He walks a lot (doesn't have a car). The rest of the guys in my group are all average sized, good looking guys (the big guys cute too...in his own way) . I'm the only female in the group and I'm average sized (about 5'5 125 lbs). Past gaming groups I've known, follow the same pattern as far as looks go. Mostly just average, normal looking people.
When my friends talk about the "gamer stereotype" , they tend to think of skinny pale, guys who wear a lot of black and rings with skulls on them.
Personally, I don't know any gamers who fit that description either.
We could all post pictures of ourselves on the boards and I'm sure we'd see a big variety in looks/body types. But I bet we'd see very few who fit the stereotype.
~S