The android creation of Professor Ivo, the first Amazo exists solely to absorb the Advanced Human energies that can fuel his immortality-obsessed master with eternal life. Duplicating the powers and abilites of the entire original JLA membership is often the primary source of nourishment for Amazo's "absorbing cells." Though the League has often defeated Amazo and returned it to its electonic "sleep", the android appeared to have also copied their enemies' will to live, as he has returned several times to threat the Justice League.