Imperial Hydra
Arnold Brown, Marvel
- Also known as Supreme Hydra,The Master
Appearances
- Strange Tales #135 — 1965-08-00
- Strange Tales #141 — 1966-02-00
- Pow! #1 — 1967-01-21
- Nick Fury, Agent of SHIELD #4 — 1968-09-00
- Nick Fury, Agent of SHIELD #6 — 1968-11-00
- Nick Fury, Agent of SHIELD #16 — 1970-11-00
- Nick Fury, Agent of SHIELD #17 — 1971-01-00
- SHIELD [Nick Fury and His Agents of SHIELD] #4 — 1973-08-00
- All-New Official Handbook of the Marvel Universe A to Z #5 — 2006-07-00
- Marvel Masterworks: Nick Fury, Agent of S.H.I.E.L.D. #1 — 2007-10-24
- S.H.I.E.L.D. #9 — 2015-10-00
- Mighty Marvel Masterworks: Doctor Strange #2 — 2022-00-00