Given human-like physical characteristics and false memories of a human life, Tomorrow Woman believes herself to be a new superhero born with psionic abilities due to a "four-lobed brain".

Tomorrow Woman is a psychic android who is created by Professor Ivo and T. O. Morrow to infiltrate and destroy the Justice League and made to believe that she is a mutant human.

After joining the League, Tomorrow Woman's programming activates, but she resists it and sacrifices herself to destroy the futuristic weapon IF with an electromagnetic pulse.

An alternate universe variant of Tomorrow Woman appears as a member of the Justice Society International with the civilian identity of Clara Kendall.

The android Tomorrow Woman's secret weapon was an electromagnetic pulse device that could disrupt human brain activity, killing anyone within its blast radius.