105 - X-Factor #6 - 4/15/1986

Happy 40th birthday Apocalypse!

Remember, in another world, that's the Owl's head on this cover.

Cover by Ron Frenz. Interiors by Louise Simonson & Jackson Guice.

#XmenADay #XMen #XFactor40 #XFactor #Cyclops #JeanGrey #Angel #Beast #Iceman

104 - X-Factor #18 - 4/14/1987

In which it turns out the lawyer who crafted X-Factor's ill-advised anti-mutant public face is up to no good.

Cover by Walt Simonson. Interiors by Louise Simonson & Simonson.

#XmenADay #XMen #XFactor40 #XFactor #Cyclops #JeanGrey

103 - X-Factor #91 - 4/13/1993

Madrox contracts the Legacy Virus, putting him on the path towards becoming its most high profile victim.

Cover by Joe Quesada. Interiors by Scott Lobdell & Jan Duursema.

#XmenADay #XMen #XFactor40 #XFactor #Havok #Polaris #Madrox #StrongGuy #Wolfsbane

102 - Uncanny X-Men Annual #18 - 4/12/1994

This is the issue where it's revealed that part of Kitty's uniform can turn into nunchuks.

Cover by Ian Churchill. Interiors by Glenn Herdling & Churchill

#XmenADay #XMen #XFactor40 #UncannyXMen #Annuals #Sabretooth #Caliban

101 - New Mutants #78 - 4/11/1989

The beginning of the end for Rusty & Skids. 😢

Cover by Rick Leonardi. Interiors by Louise Simonson & Leonardi

#XmenADay #XMen #XFactor40 #NewMutants #Pyro #Mystique #Warlock #Rictor #BoomBoom #Rusty #Wolfsbane

100 - X-Factor (vol. 2) #1 - 4/10/2002

The beginning of the short-lived, oft-forgotten, second volume of X-Factor!

Cover by Sean Phillips. Interiors by Jeff Jensen & Arthur Ranson

#XmenADay #XMen #XFactor40 #XFactorV2

099 - Avengers #53 - 4/8/1968

The conclusion to the very first X-Men crossover!

Cover by John Buscema. Interiors by Roy Thomas & Buscema

#XmenADay #XMen #XFactor40 #Avengers #Cyclops #JeanGrey #Angel #Beast #Iceman

098 - X-Factor #146 - 4/7/2004

What's a good term for a bunch of Madrox dupes? A flock of Madrox? A pack? A murder of Madrox?

Cover by Mike Miller. Interiors by Howard Mackie & Lee Moder.

#XmenADay #XMen #XFactor40 #XFactor #Madrox

097 - Wolverine (vol. 3) #13 - 4/7/2004

So do we think this is meant to be an homage to the cover of the first issue of the Claremont/Miller Wolverine mini?

Cover by Darick Robertson. Interiors by Greg Rucka & Robertson.

#XmenADay #XMen #XFactor40 #WolverineV3 #Sabretooth