(Sports) The one that always tries to get everyone involved by passing almost everytime he gets the ball
(Gaming) The one that either always dies first, or lasts the longest, depending on the game.
(At home) The "good" kid that never really pushed the boundaries
(Travelling) The one that seems to get separated from the group and has their own crazy adventure
(Building things) The one that insists on following the instructions
(Walking the dog) The one that talks to it like it can understand...Or is sitting down on a street corner refusing to go in some direction the dog wants to go in.
(University) The one that actually graduated without failing anything ! :)