>>12015888I use him competitively in RU as a Spiker/Toxic Spiker. He has a nice movepool, including pain split, destiny bond, and thunder wave to contribute to his status as a supporter. Intimidate makes him more physically bulky, providing more switch-in opportunities in order to set up entry hazards.
In UU, he's among the most used Pokemon that aren't UU, which may seem like an oxymoron, but if you play the tier, you'll see that he pops up every so often.