Uncanny X-Men  (1963)

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1st appearance of Firestar in mainstream continuity, previously appeared in the comic book adaptation of the animated series 'Spider-Man and His Amazing Friends'

James Proudstar appears in the classic Thunderbird costume

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1st team appearance of Andrea and Andreas Strucker, the twin children of Baron Von Strucker that comprise the terrorist organization Fenris

Later the twins take on the identities of Swordsman (Thunderbolts) and Songbird

The Strucker family was loosely adapted for 'The Gifted' TV show on Fox (2017-19)

[January 2021- a fake commercial in WandaVision advertises a brand of watches named 'Strucker' a nod to Baron Von Strucker that could also hint at an MCU introduction of the Strucker twins]

Marvel ⋅ 1985

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Controversial issue: in an effort to make a point about the offensiveness of the word 'mutie', Kitty Pryde uses an extremely offensive racial slur, uncensored

Marvel ⋅ 1985

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Cover art by John Romita Jr.

Newsstand ⋅ Marvel ⋅ 1985

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Marvel ⋅ 1985

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Cover and art by Barry Windsor-Smith

Newsstand ⋅ Marvel ⋅ 1985

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1st appearance of Rachel Summers as the second Phoenix

The Brotherhood of Evil Mutants becomes the Freedom Force: Mystique, Blob, Destiny, Spiral, Avalanche and Pyro

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'Trial of Magneto'

Magneto becomes headmaster of Xavier's Academy

Andrea and Andreas Von Strucker become Fenris, a terrorist organization

Newsstand ⋅ Marvel ⋅ 1985

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Canadian ⋅ Marvel ⋅ 1985

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1st appearance of Nathan Summers (Cable) as a baby, son of Scott Summers and Madelyne Pryor

Marvel ⋅ 1986

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Marvel ⋅ 1986

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Marvel ⋅ 1986

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Lady Deathstrike is transformed into her classic cybernetic organism version with claws and adamantium reinforcements

Canadian ⋅ Marvel ⋅ 1986

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$0.95 Canadian price variant

🥈 Runner-Up: New High [Previous High]

Marvel ⋅ 1986

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Newsstand ⋅ Marvel ⋅ 1986

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Canadian ⋅ Marvel ⋅ 1986

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Cover art by John Romita Jr.

Canadian ⋅ Marvel ⋅ 1986

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First mention of the term Omega when referring to the power class of a mutant

Marvel ⋅ 1986

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1st cameo team appearance of The Marauders: Arclight, Harpoon, Riptide, Vertigo, Scalphunter aka John Greycrow, Scrambler

This cover was later reprinted for a trade paperback collection but digitally augmented to remove the cigar that Wolverine was smoking

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1st full team appearance of The Marauders: Arclight, Riptide, Vertigo, Harpoon, Scalphunter aka John Greycrow, Scrambler

Specialty border printed on select covers published in November 1986 celebrating Marvel's 25th Anniversary or more precisely, the 25th year since Fantastic Four #1 was published in November 1961

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First battle of Wolverine versus Sabretooth

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Betsy Braddock joins the X-Men and adopts the name Psylocke

1st cameo appearance of Mr. Sinister

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Dazzler joins the X-Men

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1st appearance of Stonewall, Super Sabre and Crimson Commando - a team of Cold War veterans turned vigilantes

Marvel ⋅ 1987

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Marvel ⋅ 1987

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Marvel ⋅ 1987

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Havok joins The X-Men

Marvel ⋅ 1987

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1st full appearance of Mr. Sinister

[July 2022 - Javier Bardem rumored to be cast as Mr. Sinister in an unknown MCU project]

Newsstand ⋅ Marvel ⋅ 1987

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1st full appearance of Mr. Sinister

Reprint ⋅ Marvel ⋅ 1987

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So Much Fun reprint

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Classic battle of the X-Men versus the Marauders

Newsstand ⋅ Marvel ⋅ 1987

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Marvel ⋅ 1987

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Marvel ⋅ 1987

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Marvel ⋅ 1988

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Marvel ⋅ 1988

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1st full appearance of the Adversary, reveals its true form

Newsstand ⋅ Marvel ⋅ 1988

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Marvel ⋅ 1988

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1st team appearance of The Reavers: Pretty Boy, Bonebreaker, Skullbuster

1st appearance of Tyger Tiger, a crimelord in Madripoor

1st appearance of Gateway

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