LEGION

[title] - New Mutants (1st series) #1
New Mutants (1st series) #1

first mentioned

[title] - New Mutants (1st series) #26
New Mutants (1st series) #26

first appearance

[title] - New Mutants (1st series) #28
New Mutants (1st series) #26

emerged from his coma as a multiple personality

[title] - Uncanny X-Men (1st series) #255
Uncanny X-Men (1st series) #255

murdered Destiny

[title] - Uncanny X-Men (1st series) #259
Uncanny X-Men (1st series) #259

accidentally drew Shadow King to Muir Island

[title] - X-Factor (1st series) #69
X-Factor (1st series) #69

taken as Shadow King’s new host

[title] - Uncanny X-Men (1st series) #280
Uncanny X-Men (1st series) #280

reduced to a vegetative state with Farouk’s defeat

[title] - X-Men (2nd series) #38
X-Men (2nd series) #38

awakened with a unified mind

[title] - Uncanny X-Men (1st series) #320
Uncanny X-Men (1st series) #320

traveled into the past to kill Magneto

[title] - X-Men (2nd series) #41
X-Men (2nd series) #41

accidentally killed young Charles Xavier, creating the Age of Apocalypse

[title] - X-Men Omega
X-Men Omega #1

apparently killed fighting Bishop as the AoA was reversed

[title] - New Mutants (3rd Series) #21
New Mutants (3rd series) #21

trapped in Limbo until Magik arranged for his return to Earth

[title] - New Mutants (2nd series) #1
New Mutants (2nd series) #1-4

mind heavily re-fractured, brought to Utopia for treatment

[title] - X-Men: Second Coming  #1
X-Men: Second Coming

actively assisted the X-Men against Bastion

[title] - New Mutants (3rd Series) #21
New Mutants (3rd series) #21

completed his deal with Magik and destroyed the Elder Gods

[title] - Age of X: Alpha
Age of X

rogue personality temporarily reordered reality for his benefit

[title] - X-Men (2nd series) #249
X-Men: Legacy (1st series) #249-253

hunted down six renegade personalities in the real world

[title] - X-Men Legacy (2nd series) #1
X-Men Legacy (2nd series) #1

learns of his father's death, mental stability shattered again

[title] - X-Men Legacy (2nd series) #2
X-Men Legacy (2nd series) #2

meets his nemesis, Luca Aldine

[title] - X-Men Legacy (2nd series) #4
X-Men Legacy (2nd series) #4

first flirtatious psychic encounter with Blindfold

[title] - X-Men Legacy (2nd series) #12
X-Men Legacy (2nd series) #10-12

confronts the Red Skull, who stole his father's brain

[title] - X-Men Legacy (2nd series) #15
X-Men Legacy (2nd series) #15

David's mother is killed

[title] - X-Men Legacy (2nd series) #18
X-Men Legacy (2nd series) #16-18

confronts Cyclops and Luca Aldine, accidentally unleashed the Beast Xavier

[title] - X-Men Legacy (2nd series) #21
X-Men Legacy (2nd series) #21-22

defeats the Beast Xavier, but initiates the Worldworm prophecy

[title] - X-Men Legacy (2nd series) #24
X-Men Legacy (2nd series) #24

edits himself out of history