During Darkseid's second invasion, he, Shayera, and Atomic Skull were one of the many teams sent across the earth to stop Darkseid's parademons and the drilling machines. While fighting, Commander Steel noticed Shayera had a spear thrown into her wing by a parademon and it was getting ready to attack her. He picked up a shield and threw it at the parademon, killing it and saving Shayera.
COMIC BOOK BIO BY DC COMICS DATABASEEdit
Hank Heywood III’s father was shot down in Vietnam when he was only two months old, and his mother died of breast cancer one year after that. Hank was raised by his father’s best friend Dale Gunn, and his grandfather, Henry Heywood, the 1940s hero known as Commander Steel. When Hank reached his mid-teens his grandfather sent Dale to Detroit in order to design and build a base known as “The Bunker.” While Dale was away, Commander Steel subjected his grandson to a series of painful operations. Hank’s bones were replaced with a titanium and steel alloy skeleton, and motors were added to his joints. These operations were similar to the ones that had given Commander Steel his powers. Commander Steel wanted his grandson to follow in his footsteps, by any means necessary. It took years for Hank to adjust to his new body. His recovery coincided with a change in the Justice League of America’s charter. When Commander Steel discovered this he offered the new team use of the Bunker as headquarters in exchange for accepting his grandson (now named Steel) as a member, and the League accepted.
During the Crisis on Infinite Earths, Steel and fellow JLA teammate Vibe battled a group of Luthor and Brainiac's new union of inter-Earth villains in Antartica. Having a difficult time with Plasmus, Vibe came to his aid by using his vibratory powers to make the ground underneath Plasmus crumble. But only a few seconds later, Steel was randomly transported somewhere else by the powers of one of Plasmus's Brotherhood of Evil teamates, Warp.
Steel and his grandfather had a falling out when Commander Steel demanded he quit the Justice League. Steel refused, so his grandfather resorted to legal means to evict the League from the Bunker.
Professor Ivo sends androids to hunt down and kill the JLA. Steel is hellbent on revenge after Vibe is murdered. While pursuing Professor Ivo, Steel is mortally wounded in a battle with one of the androids and placed on life support by his grandfather.
Despero sought to gain revenge on all of the Detroit-era Justice League. He discovered Steel on life support and shredded him limb from limb.