Julius

Julius was an Etruscan sea captain having an affair with Queen Circe of Sarissa. Like her, a devotee of the god of the Underworld, using evil magics she secured the knife that would be used to sever his connection to the world of the living, thus making him functionally immortal.
Dealt grievous wounds by Ajax and decapitated, he continued to live - in which form he was taken by Gin & Meade to the Underworld where Arkamodos gave him a weird clockwork-powered spiderlegged body and, via threats, bound him by oath to serve Gin & Meade.
As a skilled navigator, he was able to guide them through the Blue Hell of the Lost and brought them to Sarissa and, ultimately, out of the Underworld. He now serves as Captain Nedjemet's navigator.
Julius is an angry individual, having been cursed, decapitated, mounted on a weird clockwork spider body, and forced to serve his enemies. He is unable to disobey orders given to him, but constantly screams insults and curses at everyone around him, promising awful vengeance.