King Cobra
Klaus Voorhees
- Also known as
First appearance: Captain America (Marvel, 1968 series) #367 (February 1990).
Appearances
- Captain America #367 — 1990-02-00
- Captain America #380 — 1990-12-00
- Captain America Annual #10 — 1991-00-00
- Captain America #381 — 1991-01-00
- Captain America #382 — 1991-02-00
- Captain America #385 — 1991-05-00
- Captain America Annual #11 — 1992-00-00
- Captain America #400 — 1992-05-00
- Captain America #434 — 1994-12-00
- Captain America #435 — 1995-01-00
- Captain America #436 — 1995-02-00
- Official Handbook of the Marvel Universe: Teams 2005 #[nn] — 2005-07-00
- Secret War #[nn] — 2006-03-01
- Thunderbolts #104 — 2006-09-00
- Avengers: The Initiative #1 — 2007-06-00
- Thunderbolts: Guardian Protocols #[nn] — 2007-06-20
- Avengers: The Initiative #13 — 2008-07-00
- Captain America: Fighting Chance - Acceptance #[nn] — 2009-07-01
- Batman '66 #30 — 2016-02-00
- Avengers: The Initiative - The Complete Collection #1 — 2017-03-15
- Captain America Epic Collection #15 — 2018-04-25
- Shang-Chi by Gene Luen Yang #2 — 2021-00-00
- Avengers #55 (755) — 2022-06-00
- Avengers by Jason Aaron #10 — 2022-09-28
- Captain America #5 (755) — 2024-03-00
- Immortal Thor #18 (779) — 2025-02-00
- Immortal Thor #4 — 2025-07-02
- Captain America by Mark Gruenwald Omnibus #2 — 2025-07-30