Ex, The Keeper Of Dimensions, is an intelligent and gentle person, though he's prone to loneliness. He looks out for the others, worries about people like Squares going down the same path as him without proper guidance.

He is Ess' Father, and builder of Zed.

Ex has fond memories of being able to spend time with Ess when she was younger, before he had to take on his job as the Keeper Of Dimensions. He occasionally wonders if Ess will ever be able to see him as her father again...