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New Mutants #13

Marvel ⋅ 1984

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New Mutants #13
 
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$10

Key Facts

1st appearance of Doug Ramsey, later becomes Cypher

New X-Men #134

Marvel ⋅ 2003

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New X-Men #134
 
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$1
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$5
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$18

Key Facts

1st appearance of Kid Omega

1st appearance and death of Jumbo Carnation

New Mutants #5

Marvel ⋅ 2003

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New Mutants #5
 
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$1
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$5
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$15

Key Facts

1st appearance of Elixir, a mutant capable of restoring or destroying life

All-New X-Men #1

Marvel ⋅ 2013

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All-New X-Men #1
 
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$3

Key Facts

1st appearance of Tempus aka Eva Bell, a mutant who can temporarily stop time, code name revealed in Uncanny X-Men #1

1st appearance of Triage, a mutant with healing abilities, code name given in Uncanny X-Men #4

X-Factor #38

Marvel ⋅ 1989

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X-Factor #38
 
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$4

Key Facts

Origin and death of the Goblin Queen aka Madelyne Pryor

Warren Worthington, formerly Angel, then the Horseman Death, becomes Archangel, named by Beast

📖 Inferno Crossover: next, read Spectacular Spider-Man #148

Ms. Marvel #18

Marvel ⋅ 1978

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Ms. Marvel #18
 
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$15
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$150

Key Facts

1st full appearance of Mystique, revealed without disguise

[April 2021 - when keying in a number sequence on the Buccaneer Bay section of Marvel’s exploremadripoor.com, an image with the name Mystique appears in a boat charter reservation]

Powers of X #1

Marvel ⋅ 2019

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Powers of X #1
 
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Key Facts

1st appearance of Rasputin IV

1st appearance of Cylobel

1st appearance of Percival

1st appearance of Cardinal

X-Force #32

Marvel ⋅ 1994

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X-Force #32
 
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Key Facts

1st full appearance of Paige Guthrie, revealed to have mutant powers and later becomes Husk

Uncanny X-Men #312

Marvel ⋅ 1994

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Uncanny X-Men #312
 
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$7

Key Facts

1st full team appearance of The Phalanx in their true form

Cameo in #305, hinted at when Rogue touches what seems to be a normal human and #311 briefly in their true form

Uncanny X-Men #130

Marvel ⋅ 1980

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Uncanny X-Men #130
 
Low
$12
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$40
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$130

Key Facts

The Dark Phoenix Saga Part 2

1st appearance of Dazzler

2nd appearance of Kitty Pryde

2nd appearance of Emma Frost

1st full appearance of Sebastian Shaw, the Black King

Jean Grey becomes the Black Queen of the Hellfire Club

Uncanny X-Men #191

Marvel ⋅ 1985

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Uncanny X-Men #191
 
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$3
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$9
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$30

Key Facts

1st appearance of Nimrod, an advanced sentinel from an alternate timeline

X-Men Unlimited #27

Marvel ⋅ 2000

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X-Men Unlimited #27
 
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Key Facts

1st appearance of Omega Sentinel, a human transformed by the Operation Zero Tolerance program into a sentinel

The reactivated Omega Sentinel is the machine liaison to Orchis and could be a major threat to the Omega Level mutants

Uncanny X-Men #96

Marvel ⋅ 1975

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Uncanny X-Men #96
 
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$40
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$110
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$240

Key Facts

1st appearance of Moira McTaggert, an Omega Level Mutant who retains her memory after death and reincarnation

Debut of Wolverine's berserker rage

1st appearance of Steven Lang, one of the Sentinel program pioneers

1st appearance of Kierrok, a demon created by Chthon

X-Factor #6

Marvel ⋅ 1986

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X-Factor #6
 
Low
$5
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$18
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$65

Key Facts

1st full appearance and cover of Apocalypse

Iron Fist #14

Marvel ⋅ 1977

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Iron Fist #14
 
Low
$55
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$150
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$550

Key Facts

1st full appearance and cover of Sabretooth, a mutant who becomes the primary nemesis of Wolverine

Uncanny X-Men #221

Marvel ⋅ 1987

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Uncanny X-Men #221
 
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$15
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$75

Key Facts

1st full appearance of Mr. Sinister

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

Uncanny X-Men #4

Marvel ⋅ 1964

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Uncanny X-Men #4
 
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$525
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Key Facts

1st team appearance of the Brotherhood of Evil Mutants led by Magneto

1st appearance of Scarlet Witch

1st appearance of Quicksilver

1st appearance Mastermind, later becomes Jason Wyngarde

1st appearance of Toad

2nd appearance of Magneto

Although the Scarlet Witch's costume is colored green on the cover, it is red in the story

[December 2023 - a Brotherhood of Mutants projects is rumored to be in discussion for the MCU slate]

Uncanny X-Men #3

Marvel ⋅ 1964

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Uncanny X-Men #3
 
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$1.9k

Key Facts

1st appearance of the Blob, an invulnerable mutant

X-Factor #92

Marvel ⋅ 1993

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X-Factor #92
 
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Key Facts

1st appearance of Exodus, an Omega Level mutant

Generation X #1

Marvel ⋅ 1994

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Generation X #1
 
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Key Facts

1st appearance of Chamber

1st appearance of Emplate, Marius St. Croix, a psychic vampire

1st cameo appearance of Penance, later revealed to be the real Monet St. Croix

Chromium wraparound cover

Uncanny X-Men #141

Marvel ⋅ 1981

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Uncanny X-Men #141
 
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$15
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$160

Key Facts

"Days of Future Past" part 1

1st team appearance of the Brotherhood of Evil Mutants: Mystique, Destiny, Pyro, Avalanche and Blob

1st appearance of Destiny

1st appearance of Avalanche

1st appearance of Pyro

1st appearance of Rachel Summers, daughter of Scott and Jean

Uncanny X-Men #1

Marvel ⋅ 2013

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Uncanny X-Men #1
 
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$1
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$7

Key Facts

1st appearance of Goldballs, a mutant with powers that manifest as golden spheres that are actually eggs (revealed in House of X #5)

Debut of Magneto’s white costume

X-Men #157

Marvel ⋅ 2004

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X-Men #157
 
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Key Facts

1st appearance of Shen Xorn, the twin brother of Kuan-Yin Xorn possessing similar powers except instead of a star, he has a black hole in his head

New X-Men Annual #2001

Marvel ⋅ 2001

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New X-Men Annual #2001
 
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Key Facts

1st appearance of Xorn, a mutant who possesses a small star in his brain - previous appearances of Xorn were revealed to be Magneto in disguise but the character proved to be a fan-favorite and warranted a true introduction

1st appearance of John Sublime, an ancient sentient bacteria that lives in its human host

1st team appearance of X-Corporation (Hong Kong): Domino and Risque (deceased)

This issue is the first widescreen format Marvel comic

House of X #1

Marvel ⋅ 2019

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House of X #1
 
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Key Facts

1st team appearance of Orchis, a team of human scientists united to stop the mutant threat: Dr Alia Gregor, Captain Erasmus Mendel, Agent Goodall, Omega Sentinel, Dr Cain

1st appearance of Krakoa residents: Fauna, Wrench, Sonos Rex

New X-Men #118

Marvel ⋅ 2001

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New X-Men #118
 
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Key Facts

1st team appearance of the Stepford Cuckoos, a product of Weapon XIV, created from Emma Frost's DNA

1st appearance of Angel Salvadore

1st appearance of Cerebella, a disembodied mutant brain

Artist Ethan Van Sciver hid the word 'sex' in multiple panels throughout the book, many of which were caught by editors but one slipped past which is evident in a protest scene

Uncanny X-Men #1

Marvel ⋅ 1963

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Uncanny X-Men #1
 
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Key Facts

1st team appearance of the X-Men: Cyclops, Jean Grey aka Marvel Girl, Iceman, Angel, Beast, Professor X

1st appearance of Magneto

Homo Superior concept, coined by Magneto to describe humans born with special abilities introduced in this issue

Giant-Size X-Men #1

Marvel ⋅ 1975

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Giant-Size X-Men #1
 
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$7k

Key Facts

1st appearance of the new X-Men: Storm (1st), Nightcrawler (1st), Colossus (1st), Thunderbird (1st), Wolverine (3rd)

Many resources label this the 2nd full appearance of Wolverine and The Incredible Hulk #182 a second cameo

1st appearance of Illyana Rasputin as a child, later becomes Magik

Introduction of Krakoa, the Living Island

First use of the sound effect 'snikt' associated with Wolverine's claws

Astonishing X-Men #6

Marvel ⋅ 2018

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Astonishing X-Men #6
 
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$3

Key Facts

1st appearance of Charles Xavier as X, inhabiting the body of Fantomex

Uncanny X-Men #129

Marvel ⋅ 1980

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Uncanny X-Men #129
 
Low
$50
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$125
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$350

Key Facts

The Dark Phoenix Saga Part 1

1st appearance of Kitty Pryde

1st appearance of Emma Frost, the White Queen

1st cameo team appearance of The Hellfire Club, in shadows

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