| ||We will rebuild, and we will thrive.|
- In the comics, John Henry Irons, a brilliant weapons engineer, created and donned a suit of powered armor in Superman's memory to fight crime.
- This is Steel's sixth animated appearance. He previously appeared in the DCAU (Superman: The Animated Series and Justice League Unlimited), Justice League: The New Frontier, Justice League: Throne of Atlantis and some of its sequels, Justice League: Gods and Monsters and Teen Titans Go! To the Movies, as a cameo.
- ↑ Paredes, Francisco (writer) & Berkeley, Christopher (director) (January 25, 2019). "Exceptional Human Beings". Young Justice. Season 3. Episode 10. DC Universe.
- ↑ 2.0 2.1 Weisman, Greg (writer) & Berkeley, Christopher (director) (January 4, 2019). "Princes All". Young Justice. Season 3. Episode 1. DC Universe.
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