Nihilego

Nihilego is a Poison/Rock-Type Pokemon in Pokemon Sun and Pokemon Moon. Nihilego is an Ultra Beast also known by the code name UB-01 Symbiont. Lusamine was interested in these Ultra Beats that she used Cosmog to open the Ultra Wormholes and ended up in the Ultra Beast world. She combined with a Nihilego and became a monster. When she was defeated, Nihilego was separated from her.