176
APPEARANCES
71
SERIES
The X-Men #4
"The Brotherhood of Evil Mutants"
March 1964
First appearance of Scarlet Witch. Earliest catalogued appearances of Quicksilver, Toad, and Mastermind.
Showing 101–176 of 176. Back to key appearances
X-Men Unlimited #15"Second Contact"
Jun 1997
No listings
X-Man #36"Falling Star"
Mar 1998
X-Men / Dr. Doom '98 #1"Doom Quest"
Jun 1998
X-Men #86"Thanks for the Memories"
Earliest catalogued appearance of Alda Huxley.
Mar 1999
Magneto Ascendant #1"The Triumph of Magneto!; If Iceman Should Fail--!; The Gentleman's Name is Magneto; Please Allow Me To Introduce Myself...!"
Apr 1999
Earth X #6"Chapter Six"
Earliest catalogued appearance of Double-Header (Earth X).
Sep 1999
X-Men Unlimited #24"Search and Destroy; Aftermath"
Earth X #7"Chapter Seven"
Oct 1999
X-Men #93"Hidden Lives, Part 1 of 2: Open Wounds"
X-Men #94"Hidden Lives. Part 2 of 2: Pandora's Box"
Nov 1999
X-Men: The Hidden Years #11"Destroy All Mutants!"
Oct 2000
Avataars: Covenant of the Shield #2
Universe X #2
Earliest catalogued appearances of Slaymaster, Fury (Marvel), and Captain U.K..
Nov 2000
X-Men: The Hidden Years #12"And Death Alone Shall Know My Name"
X-Men: The Hidden Years #13"Blood and Circuses"
Dec 2000
X-Men: The Hidden Years #14"Yet No More Like My Father"
Jan 2001
Ultimate X-Men #3"Warzone"
Apr 2001
Ultimate X-Men #4"Betrayal"
May 2001
Gambit & Bishop #3"That's Stryfe That's What People Say"
Ultimate X-Men #5"Killing Fields"
Jun 2001
Universe X: Iron Men #1
Sep 2001
Ultimate X-Men #11"Sins of the Past"
Dec 2001
X-Men Unlimited #33"The Blob / Special Attraction / The Sport of Queens / The Grand Illusion / Survival of the Fittest / Lucky Day"
Ultimate X-Men #12"End Game"
Jan 2002
Ultimate X-Men #15"It Doesn't Have to be This Way"
Apr 2002
Wolverine #176"The Logan Files Epilogue"
Jul 2002
X-Men Unlimited #40"Hunters/Animals/Slam"
Feb 2003
Ultimate War #1"The Ultimates vs. Ultimate X-Men Part 1"
Ultimate X-Men #27"Return of the King: Part 1"
Mar 2003
Marvel Masterworks: The Uncanny X-Men #4"Volume 4"
Oct 2004
Marvel Masterworks: The Uncanny X-Men #5"Volume 5"
Jan 2005
Excalibur #8
Feb 2005
Excalibur #9
Mar 2005
New Avengers #9
Sep 2005
New Avengers #10
Oct 2005
Ultimate X-Men #69"Phoenix?: Part 1"
Jun 2006
Ultimate X-Men #70"Phoenix?: Part 2"
Jul 2006
X-Men: First Class #7"Who Wants to Date a Millionaire?"
May 2007
Ultimate X-Men #81"Cliffhangers"
Jun 2007
X-Men: First Class #2"Island X"
Sep 2007
X-Men: First Class #3"Island X: Part Two; A Buddy In Scarlet"
Oct 2007
X-Men: Legacy #209"From Genesis To Revelations, Part 2"
May 2008
X-Men: Odd Men Out #1"Odd Men Out; The New Mutants in Think Again!"
Sep 2008
X-Men Origins: Emma Frost #1"Will & Love"
Jul 2010
X-Men: Curse Of The Mutants Saga #1"X-Men a Go-Go!"
Aug 2010
X-Factor Forever #5"Collateral Damage"
Sep 2010
Avengers: The Children's Crusade #2
Nov 2010
Women of Marvel #1"Thrones; Black Magic Women; Love & Illusion"
Jan 2011
X-Men Giant-Size #1"First To Last, Part One"
Jul 2011
X-Men #12"First to Last, Part 2"
Aug 2011
X-Men #13"First To Last Part 3"
X-Men #14"First to Last, Part 4"
Sep 2011
X-Men #15"First To Last Part 5"
Avengers Origins: The Scarlet Witch & Quicksilver #1
Jan 2012
X-Factor #243"Breaking Points: Day 3"
Nov 2012
All-New X-Men #5
Mar 2013
X-Men: No More Humans #1"HC"
Jul 2014
Magneto #6
Sep 2014
Marvel Masterworks: The Uncanny X-Men #9"Volume 9"
Jan 2015
Magneto #18
Jul 2015
Generations: Phoenix & Jean Grey #1
Oct 2017
X-Men: Blue #18"Cross Time Capers Part 3"
Feb 2018
Empyre: X-Men #2"Growing Strong"
Oct 2020
Giant-Size X-Men: Fantomex #1"The World"
Hellions #9
Apr 2021
Hellions #10
May 2021
Hellions #11
Jul 2021
X-Corp #2"A Shark In the Water"
Aug 2021
X-Men: The Trial of Magneto #1"Dial M for Wanda"
Oct 2021
X-Corp #4"A Carrot On A Stick"
X-Corp #5"Closing Costs"
Nov 2021
X-Men: Days of Future Past: Doomsday #1
Sep 2023
Magneto #3"Evil Mutant, Chapter Three: The Cage!"
Dec 2023
Wolverine: Revenge #1
Oct 2024
Wolverine #11"Only a Mother"
Sep 2025
Wolverine #12"Mother and Master"
Oct 2025
Writers and artists on Mastermind's earliest appearances.
All-New X-Men
41 issues
Amazing Adventures
39 issues
14 issues
Avataars: Covenant of the Shield
3 issues
Avengers Origins: The Scarlet Witch & Quicksilver
1 issue
Avengers: The Children's Crusade
9 issues
Captain America
355 issues
Classic X-Men
45 issues
Code of Honor
4 issues
Earth X
16 issues
Empyre: X-Men
5 issues
Excalibur
126 issues
