POLARIS

The X-Men #49"Who Dares Defy The Demi-Men?; A Beast Is Born"

Earliest catalogued appearances of Polaris and Mesmero.

Oct 1968

No listings

The X-Men #50"City of Mutants; This Boy -- This Bombshell!"

Nov 1968

No listings

The X-Men #51"The Devil Had A Daughter!; The Lure of the Beast-Nappers!"

Earliest catalogued appearance of Eric the Red.

Dec 1968

No listings

The X-Men #52"Twilight of the Mutants; The Crimes of the Conquistador!"

Jan 1969

No listings

The X-Men #57"The Sentinels Live!; The Female of the Species!"

Earliest catalogued appearance of Larry Trask.

Jun 1969

No listings

The X-Men #58"Mission: Murder"

Jul 1969

No listings

The X-Men #60"In the Shadow of Sauron"

Sep 1969

No listings

The X-Men #61"Monsters Also Weep"

Oct 1969

No listings

The X-Men #65"Before I'd Be Slave"

Feb 1970

No listings

The X-Men #66"The Mutants and the Monster"

Mar 1970

No listings

The Incredible Hulk #150"Cry Hulk, Cry Havok!"

Apr 1972

No listings

Captain America #174"It's Always Darkest..."

Jun 1974

No listings

Giant-Size X-Men #1"Deadly Genesis!; Call Him...Cyclops; I, the Iceman; The Female of the Species!"

First appearances of Storm, Colossus, and Nightcrawler. Earliest catalogued appearances of Magik, Thunderbird (John Proudstar), and Krakoa.

May 1975

No listings

Giant-Size X-Men #2"Mission: Murder!; Do or Die, Baby!"

Jul 1975

No listings

The X-Men #94"The Doomsmith Scenario!"

Earliest catalogued appearance of Dragonfly.

Aug 1975

No listings

The X-Men #97"My Brother...My Enemy!"

Feb 1976

No listings

The X-Men #104"The Gentleman's Name is Magneto"

Earliest catalogued appearances of Lilandra, Corsair, and Ch'od.

Apr 1977

No listings

The X-Men #105"Phoenix Unleashed!"

Jun 1977

No listings

Marvel Treasury Edition #17

Jan 1978

No listings

Marvel Team-Up #69"Night of the Living God"

May 1978

No listings

The Defenders #62

Aug 1978

No listings

The Defenders #63

Sep 1978

No listings

The Defenders #64

Oct 1978

No listings

The X-Men #119"Twas The Night Before Christmas..."

Mar 1979

No listings

The X-Men #122"Cry for the Children"

Jun 1979

No listings

The X-Men #125"There's Something AWFUL on Muir Island!"

Earliest catalogued appearance of Proteus (Marvel).

Sep 1979

No listings

The X-Men #126"How Sharper Than A Serpent's Tooth..."

Oct 1979

No listings

The X-Men #127"The Quality of Hatred!"

Nov 1979

No listings

The X-Men #128"The Action of the Tiger!"

Dec 1979

No listings

The X-Men #129"God Spare The Child..."

First appearance of Emma Frost. The series was still titled X-Men at #129; it became Uncanny X-Men later. Earliest catalogued appearances of Kitty Pryde and Sebastian Shaw.

Jan 1980

No listings

The Uncanny X-Men #145"Kidnapped!"

May 1981

No listings

The Uncanny X-Men #146"Murderworld"

Jun 1981

No listings

Marvel Super-Heroes #99"Cry Hulk! Cry Havok!"

Jul 1981

No listings

The Uncanny X-Men #147"Rogue Storm!"

Jul 1981

No listings

What If? #27

Earliest catalogued appearances of Phoenix Force and Robert Kelly.

Jul 1981

No listings

Fantastic Four Roast #1"When Titans Chuckle!"

May 1982

No listings

The Uncanny X-Men #158"The Life That Late I Led..."

Jun 1982

No listings

The Uncanny X-Men #159"Night Screams!"

Jul 1982

No listings

The Uncanny X-Men #163"Rescue Mission"

Nov 1982

No listings

The Official Handbook of the Marvel Universe #8"N-P: Namorita to Pyro"

Earliest catalogued appearances of Puck (Judd), Athena, and Peregrine.

Aug 1983

No listings

The Uncanny X-Men #173"To Have and Have Not"

Sep 1983

No listings

The Official Handbook of the Marvel Universe #12"V-Z: Valkyrie to Zzzax"

Earliest catalogued appearances of Lockheed and Morph.

Dec 1983

No listings

The Official Handbook of the Marvel Universe #10"Paladin To The Rhino"

Earliest catalogued appearance of Phastos.

Sep 1986

No listings

Classic X-Men #1"First Night; Deadly Genesis"

Sep 1986

No listings

Classic X-Men #2"The Doomsmith Scenario!; First Friends"

Oct 1986

No listings

Classic X-Men #5"My Brother, My Enemy!; Prison of the Heart"

Jan 1987

No listings

The Official Handbook of the Marvel Universe #15"Wonder Man To Zzzax Plus Appendix To Alien Races"

Mar 1987

No listings

Classic X-Men #8"Greater Love Hath No X-Man...; I am Phoenix!"

Apr 1987

No listings

The Uncanny X-Men #218"Charge of the Light Brigade"

Jun 1987

No listings

The Uncanny X-Men #219"Where Duty Lies"

Jul 1987

No listings

Classic X-Men #12"The Gentleman's Name is Magneto; A fire in the night"

Earliest catalogued appearances of Cr'reee and Anya Eisenhardt.

Aug 1987

No listings

Classic X-Men #13"Phoenix Unleashed!; Lifesigns"

Sep 1987

No listings

The Uncanny X-Men #221"Death by Drowning!"

Earliest catalogued appearance of Mister Sinister.

Sep 1987

No listings

Classic X-Men #14"Where No X-Man Has Gone Before!; What Stuff Our Dreams Are Made Of... ;"

Oct 1987

No listings

The Uncanny X-Men #222"Heartbreak"

Oct 1987

No listings

The Uncanny X-Men #223"Omens & Portents"

Nov 1987

No listings

The Uncanny X-Men #232"Earthfall"

Aug 1988

No listings

Classic X-Men #25"T'was The Night Before Christmas; Just don't look in it's eyes"

Sep 1988

No listings

Classic X-Men #28"Cry For The Children; Who Am I?"

Dec 1988

No listings

The Uncanny X-Men #239"Vanities"

Dec 1988

No listings

The Uncanny X-Men #240"Strike The Match"

Jan 1989

No listings

The Uncanny X-Men #241"Fan The Flames"

Feb 1989

No listings

Classic X-Men #31"There's Something Awful on Muir Island!; The Spigot at the end of the Universe"

Mar 1989

No listings

X-Factor #39"Ashes to Ashes"

Apr 1989

No listings

Classic X-Men #32"How sharper than a serpent's tooth...!; Shreds of Humanity"

Apr 1989

No listings

The Uncanny X-Men #243"Ashes"

Apr 1989

No listings

Classic X-Men #33"The Quality of Hatred; So Good It Hurts"

May 1989

No listings

Classic X-Men #34"The Action of the Tiger!; Double Negative"

Jun 1989

No listings

Classic X-Men #35"God Spare the Child...; Paper, Not Paper"

Jul 1989

No listings

X-Men Annual #13"Double-X-Cross / Jubilation Day / Serpent in the Garden"

Earliest catalogued appearances of Coachwhip and Boomslang.

Aug 1989

No listings

The Official Handbook of the Marvel Universe #5"Marauders To Power Princess"

Earliest catalogued appearance of Malice (Marvel).

Sep 1989

No listings

The Uncanny X-Men #249"The Dane Curse"

Oct 1989

No listings

The Uncanny X-Men #250"The Shattered Star"

Oct 1989

No listings

The Uncanny X-Men #253"Storm Warnings"

Nov 1989

No listings

The Uncanny X-Men #254"All-New, All-Different...Here We Go Again"

Dec 1989

No listings

The Uncanny X-Men #255"Crash & Burn"

Dec 1989

No listings

The Uncanny X-Men #257"I am Lady Mandarin"

Jan 1990

No listings

What If...? #9

Jan 1990

No listings

Classic X-Men #44"Elegy; Her First & Last"

Feb 1990

No listings

The Uncanny X-Men #258"Broken Chains"

Feb 1990

No listings

What If...? #13

May 1990

No listings

The Uncanny X-Men #269"Rogue Redux"

Oct 1990

No listings

What If...? #23

Mar 1991

No listings

Marvel Super-Heroes #6"Third Time's the Charm!; Natives in a Strange Land; Mercy St.; Fruits of the Wound; The Bouncer; Pin-up Gallery"

Apr 1991

No listings

The New Warriors #11

May 1991

No listings

The New Warriors #12

Jun 1991

No listings

The New Warriors #13

Jul 1991

No listings

X-Factor #69"The Muir Island Saga: Clash Reunion"

Aug 1991

No listings

X-Factor #70"The Muir Island Saga Epilogue"

Sep 1991

No listings

The Uncanny X-Men #280"One Step Back --Two Steps Forward"

Sep 1991

No listings

X-Men Annual #15"Queens of Sacrifice"

Sep 1991

No listings

X-Factor #71"Cutting the Mustard"

Oct 1991

No listings

X-Factor Annual #6"King of Pain"

Oct 1991

No listings

X-Factor #72"Multiple Homicide"

Nov 1991

No listings

X-Factor #73"Crowd Control"

Dec 1991

No listings

X-Factor #74"Politically Incorrect"

Earliest catalogued appearance of Slab.

Jan 1992

No listings

X-Factor #75"The Nasty Boys"

Earliest catalogued appearances of Gorgeous George and Hairbag.

Feb 1992

No listings

The Incredible Hulk #390"This Means War"

Feb 1992

No listings

X-Factor #76"X-Communication"

Mar 1992

No listings

The Incredible Hulk #391"X-Calation"

Mar 1992

No listings