Morro

Morro the ghoul is the secondary antagonist in the fifth season in Ninjago. He is one of Wu's former students and a ghost warrior, as well as GhoulTar's possible second-in-command. He was rumored as the main antagonist, just to hide information about the true main villain.

Bio
Morro was the Master of Wind and was trained by Sensei Wu. However, he was banished in the Cursed Realm for unknown reasons.