A young kobold pulls silly pranks, simply for the laugh
An adult kobold puts away their childish pranks for the practicality of proper snare-trap building
A wizened kobold elder unites the two, for the silliest adventurer death traps, like a flight of stairs that dispenses marbles, or putting fake "DISABLE TRAP" buttons on every wall
DISABLE TRAP button that just conspicuously activates more traps so you push it and oops there are giant axes swinging from the ceiling now
