Steel's body can absorb up to Excellent damage, from either physical or energy attacks only, without harm.
Martial Arts B * Wrestling * Football
The Justice League of America
Hank Heywood's father was a pilot shot down over Vietnam only two months after Hank was born. Hank's mother died of breast cancer one year after that. Thus, Hank was raised by his father's best friend, Dale Gunn, and by his grandfather, Henry Heywood I, the 1940s hero known as Commander Steel. After World War II, the elder Heywood had become an Air Force General and then a wealthy industrialist.
When Hank was in his mid-teens, his grandfather sent Dale to Detroit in order to design and build "The Bunker." During the years that Dale was gone, Commander Steel submitted his grandson to a series of painful operations. Hank's bones were replaced with a titanium and steel alloy skeleton. Motors and servo-mechanisms were added to his joints to replace his muscles. A subdermal plastisteel mesh lined his new fiberplast skin. Cybernetic devices were inserted in his ears and eyes. After the operations, Hank underwent a year-long series of bio-chemical treatments to help him adjust to his new body.
Hank's recovery coincided with a change in the Justice League of America's charter. When news of this change reached Hank's grandfather, he convinced his grandson to offer the Bunker to the reformed League. In exchange, Hank asked to be made a member in his new identity as Steel. The JLA agreed to both offers.
Later, Commander Steel regretted his "gifts" and attempted to take both the Bunker and Steel back by force. Steel resisted violently, so his grandfather resorted to legal means to evict the League from the Bunker. Nevertheless, Steel has remained with the League.