onothon Evan Starsmore ("Jono" to his friends) is a native of London and a mutant who possesses a furnace of psionic energy in his chest. This power first manifested in an explosion during a party he was attending with then girlfriend Gayle Edgerton. Its initial manifestation destroyed much of his chest and lower face and crippling Gayle Edgerton. As a result of his disfiguration, Chamber can only speak via telepathy. He does not eat, drink, or breathe; it is believed that either the psionic energy sustains him without needing his vital organs, or that his body is merely a shell, and he is actually made up of psionic energy. This is further supported by the fact that Chamber is immune to the "Death Factor" of Omega Red, meaning that he is not sustained by "life force". The primary manifestation of his abilities is his ability to fire powerful blasts of psychokinetic force. It has been implied at numerous times that Chamber is potentially one of the most powerful mutants to walk the earth (most notably the scale of his mutagenic aura as seen by Emplate in Generation X #1, also at times when he is seen to 'cut loose' with his abilities) but his emotional issues have apparently prevented him from significantly exploring this potential. His disfiguration also left Chamber sullen and angry and his teammates have often found him difficult to get along with.