Real Name: Geoffrey Thibodeux
Publisher: DC Comics
Created by: Gerry Conway and Chuck Patton
1st appearance: Justice League of America #234, 1984
Team Affiliations: Cadre, Legion of Doom
Legal Status: US Citizen with Criminal Record
Height: Variable Weight: Variable
Eyes: Brown Hair: Black
Skills and abilities: Formally gifted scientist.
Powers: He has the power to alter his physical size and mass granting him superhuman strength in the process. Black Mass also has unspecified gravitational powers.
Originally a small framed scientist with dreams of being something more. Bullied all his life because of gifted mind and frail body he finally got the chance of a lifetime when the “overmaster” made him a member of the Cadre. Here he was gifted with two wristbands that gave him the power to control gravity and alter his mass. Along with Crowbar he and his team were sent against the Justice League of America. After being defeated and jailed he eventually escaped and had the powers of the bands permanently bonded to him. During “Joker’s last laugh” he was shot in the head and had his brain damaged. Now reduced to the intellect of a small child he was jailed with Dr. Polaris where his own powers kept the Dr’s in check. When Polaris broke free he took Black Mass and Crowbar as part of his new Cadre who were defeated by the Power Company. Later him and Crowbar tried to flee the country and were defeated by Black Lightning.