Very little is known about the devious villain Libra.

He first appeared in Justice League of America #111 where he founded the first Injustice Gang.

Libra had formed the group to combat the Justice League Of America, with a back-up plan involving a special device that absorbed half of all of the JLA's powers, including half of Superman's strength, half of the Flash's speed, half of Green Lantern's power ring, half of Batman's intellect, and half of Elongated Man's elasticity.

The deice worked so well, that Libra decided to use it to absorb the powers of all the cosmos, and therein lies his downfall. The machine malfunctioned, and instead of absorbing the cosmos into him, Libra was absorbed into the cosmos.

In Final Crisis Libra created a new and final incarnation of the Secret Society of Supervillians. This Society is more clever nad frightening than before, and under Libra's leadership become almost a terrorist sect. Libra offers to the villains their "hearts desire" if they join him. Before the formation of the Society, Libra fulfilled the desire of the Human Flame, a two-bit Martian Manhunter foe, by killing his hated foe, while he was drugged. This is only the first of the heinous list of criminal acts of Libra and his Society,and even they're not even at full strength yet.