Cobalt is the Amalgam version of Marvel's Mastermind
and DC's Gold
The radioactive member of the Magnetic Men
. Cobalt is the leader in the absence of Magneto
. Cobalt is the energy powerhouse of the Magnetic Men. Like the others, Cobalt eventually gained sentience. He was killed in battle along with the other Magnetic Men. Magneto was able to restore their lives.
When given the form of a human by Mister Mastermind
, Magneto gave him the name Lucius Richmond and the profession of a wealthy businessmen.