Guardsman
Michael O'Brien, Marvel
- Also known as
Appearances
- Marvel Super Hero Contest of Champions #1 — 1982-06-00
- The Avengers #236 — 1983-10-00
- The Avengers #237 — 1983-11-00
- Power Man and Iron Fist #113 — 1985-01-00
- Iron Man Annual #8 — 1986-10-00
- Avengers: The Contest #[nn] — 2012-05-16
- Iron Man Epic Collection #7 — 2025-06-04