Snarl is a Triceratops Dinobot. Built quite a bit better than a tank, there's nothing he enjoys more than taking the nearest solid object and headbutting it. It's not so much the mindless destruction he likes, it's just that Snarl thoroughly enjoys being strong, and smashing things to powder seems like the best way of expressing this. And if he needs to mix things up a little, being able to breathe fire hot enough to melt a garbage truck helps.