Mark Gruenwald

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1st appearance and origin of Needle, has the ability to paralyze victims with hypnosis

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1st appearance of Gypsy Moth, a mutant who manipulates fabrics with her mind

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Thor #281

Marvel 1979 Vol. 1
Non-Key
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1st cameo team appearance of the Time-Keepers, beings with the ability to manipulate time

Introduction of Castle Limbo, the home of Immortus

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Origin of Quasar, how Marvel Man transformed into Quasar

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Origin of Quicksilver and Scarlet Witch

First meeting of Modred- possessed by Chthon, and Wanda, where she encounters the Darkhold

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Spider-Woman #16

Marvel 1979 Vol. 1
Non-Key
Whitman
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1st appearance of Titania, Davida DeVito, later becomes Lascivious

1st appearance of Screaming Mimi

1st appearance of Poundcakes

1st appearance of Letha

1st team appearance of The Grapplers, a female wrestling team

Death of Deathlok

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Chthon appears as a cloud entity and possesses the Scarlet Witch

1st appearance of Magda, the wife of Magneto and mother to Quicksilver and Scarlet Witch

Origin of Scarlet Witch and Pietro, told by Bova

Hinted that Magneto is the father of Quicksilver and Scarlet Witch

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1st appearance of Waxman, a scientist with a rare skin condition that grants him the ability to alter his appearance

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Origin of the Darkhold

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1st appearance of Giant-Man, formerly Black Goliath

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First meeting of Spider-Man and Spider-Woman in the mainstream Marvel Universe although they did appear together earlier in the Children's Television Universe alternate reality of Spidey Super Stories #32

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1st appearance of Nth Man

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1st appearance of Impossible Woman

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1st appearance of Her, formerly Paragon, later becomes J'Ridia Starduster, Kismet and Ayesha

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Classic battle of Spider-Man vs the Hulk, oversized issue

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New Serpent Squad team roster: Anaconda, Black Mamba, Death Adder, Sidewinder - final panel

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1st full team appearance of the Serpent Squad: Anaconda, Black Mamba, Death Adder, Sidewinder - previously appeared in one panel in Marvel Two-In-One #64

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Thor #299

Marvel 1980 Vol. 1
Non-Key
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Thor #299

Marvel 1980 Vol. 1
Non-Key
Newsstand
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Origin of Odin

Origin of Thor, revealed that Gaea is the mother of Thor

1st appearance of Yu Huang, the Jade Emperor

1st team appearance of the Council of God-Heads: Ammon Ra, Anu, Baiame, Buddha, Buluku, Itzamna, Izanagi, Manitou, Nuada, Okonorote, Ukko, Ulgen, Tezcatlipoca, Tomazooma, Vishnu, Viracocha, Zeus

1st cameo appearance of Kiana aka Moonstalker

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Origin of the Eternals, Deviants and Mutants begins when the First Host of Celestials visit Earth

Despite this story appearing in a What If…? comic, it is official Marvel canon

1st appearance of Spider-Ma'am

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Thor #300

Marvel 1980 Vol. 1
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Newsstand
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Introduction of Ta-Lo, the Great Canopy Heaven, a God Realm

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Thor #301

Marvel 1980 Vol. 1
Non-Key
Newsstand
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Thor #302

Marvel 1980 Vol. 1
Non-Key
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1st appearance of Maelstrom, an Inhuman/Deviant hybrid

1st appearance of Gronk

1st appearance of Phobius

1st appearance of Helio

1st cameo appearance of Deathurge

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First published artwork in the comic book industry by Rick Leonardi, cover and interior

Thor #304

Marvel 1981 Vol. 1
Non-Key
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1st full appearance of Deathurge, the herald of Oblivion

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