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John Costanza

Marvel Sep 1975

Thor #239

UK Edition
Thor #239
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1st team appearance of the Heliopians, ancient Egyptian gods: Horus, Osiris and Isis
Marvel Oct 1975

Thor #240

UK Edition
Thor #240
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1st appearance of Seth in the Modern Age
1st appearance of Mimir, uncle of Odin
Marvel Nov 1975

Invaders #3

UK Edition
Invaders #3
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1st full appearance of U-Man aka Merrano - previously an unnamed, retconned appearance in Sub-Mariner Comics #35 (1954)
Marvel Jan 1976

Howard the Duck #1

UK Edition
Howard the Duck #1
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First solo title featuring Howard the Duck
1st appearance of Beverly Switzler
1st appearance of Pro-Rata, a magician who used his accounting knowledge to wield magic
Marvel Jan 1976

Omega the Unknown #1

UK Edition
Omega the Unknown #1
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1st appearance of Omega the Unknown
1st appearance of James-Michael Starling, bonded to Omega but later becomes Omega

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