In New Adventures of Superboy #25 (Jan. 1982), Professor Lewis Lang and his assistant Burt Belker discover a helmet in the Valley of Ur identical to the one given to Kent Nelson by Nabu on Earth-Two. This helmet contained a Lord of Chaos, which went on to possess Burt and turn him into Doctor Chaos, whose agenda differed from the Earth-Two Doctor Fate's. Doctor Chaos' costume mirrors Doctor Fate's, with an inverted color scheme. Superboy confronts him and is able to remove the helmet from Belker and jettison it into space. There have been no further appearances of the helmet.