This Ultra Beast appeared from another world. It shows off its body, but whether that display is a boast or a threat remains unclear.
– Pokémon Sun Pokédex
Buzzwole’s code name is UB-02 Absorption. It’s exclusive to Sun/Ultra Sun, the counterpart to Pheromosa. You get 2 Buzzwoles in Sun, which allows you to trade I guess.
Buzzwole’s typing of Bug/Fighting is shared only by Heracross and Pheromosa.
Stat-wise, Buzzwole has pretty high Attack and Defense, but low Sp Attack, Sp Def, and Speed.