Arcturus is a posthumous anti-villain in Ninjago. He is the general of the Anacondrai Tribe.
Arcturus lead the Serpentine during the Serpentine War. When the war ended, the Serpentine tribes were locked away in tombs and the Anacondrai Generals were banished to the Cursed Realm by Garmadon. Years lated Garmadon sacroficed himself to free Arcturus and the other generals in order to save Ninjago from Master Chen. Arcturus banished Chen to the Cursed Realm and thanked to Lloyd before leaving to the Departed Realm.