Will Magnus participated in Operation Flying Cloud, in which he and his teamed was tasked in creating a electromagnetic screen of interference to blind Soviet radar from detecting Flying Cloud's launch. He later was among the gathered scientists at Cape Canaveral in drawing up a two-stage assault on The Centre. After the creature's defeat, Magnus later created the Metal Men.
- In the animated adaption of Justice League: The New Frontier Will Magnus was voiced by Townsend Coleman.
- 3 Appearances of William Magnus (Earth-21)
- 3 Images featuring William Magnus (Earth-21)
- Quotations by or about William Magnus (Earth-21)
- Character Gallery: William Magnus (Earth-21)