Crawley as Mind-Grabber sought to make a name for himself as a costumed crusader, but on each occasion was outshined by a member of the Justice League of Earth-One. Out of an angered disposition, he mentally manipulated some aliens into attacking the League and the hero known as Creeper. When his scheme was revealed, he apologized and quickly retired from his alter ego.
Carver was a paleontologist who sought to continue the career of his predecessors as the latest incarnation of the Immortal Man. However, unlike them, he saw the wisdom of wearing a mask to conceal his identity. That said, Helen Phelps who had romanced the former Immortal Men sought Anton out, and struck up a relationship with him just prior to his tragic death while battling energy apes that continued to materialize mysteriously outside the college town he resided in.