Uploaded November 2025 | Updated September 2026, 1 week ago

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History of the Marvel Universe No. 350
The Origin of Legion
The Son of Professor X
David Charles Haller

Sources:
Xavier's Travels
- X-Men 020 (1966)
- X-Men 117 (1979)
- Uncanny X-Men 161 (1982)
Enter: Legion
- New Mutants 001 (1983)
- New Mutants 026-028 (1985)
- New Mutants 044 (1986)
Revisiting Gabrielle Haller's History
- Excalibur (Vol. 3) 014 (2005)
Glimpses of David's Childhood
- X-Men Legacy (Vol. 2) 015 (2013)
- Legion 002 (2018)
The Death of Destiny
- Uncanny X-Men 254-255 (1989)
- X-Men Forever 002 (2001)
- X-Necrosha 001 (2009)
Possessed by the Shadow King
- Uncanny X-Men 257-259 (1990)
- Uncanny X-Men 269 (1990)
- Uncanny X-Men Annual 015 (1991)
- X-Factor Annual 006 (1991)
- Uncanny X-Men 278-279 (1991)
- X-Factor 069 (1991)
- Uncanny X-Men 280 (1991)
- X-Factor 070 (1991)
Legion Quest
- X-Men (Vol. 2) 038 (1994)
- X-Factor 108-109 (1994)
- X-Men (Vol. 2) 039 (1994)
- Uncanny X-Men 320 (1995)
- X-Men (Vol. 2) 040 (1995)
- Uncanny X-Men 321 (1995)
- X-Men (Vol. 2) 041 (1995)
The Age of Apocalypse
- X-Men: Alpha 001 (1995)
- X-Men: Omega 001 (1995)
The Spirits of Jemail, Jack, and Cyndi
- Excalibur 121 (1998)
Legion in Limbo
- Fantastic Four (Vol. 3) 016 (1999)
Return to Earth
- New Mutants (Vol. 3) 001-005 (2009)
The Swapping Helmet
- New Mutants (Vol. 3) 014 (2010)
The God Mutant Returns
- New Mutants (Vol. 3) 020-021 (2011)
Doctor Nemesis Eliminating Alters
- X-Men Legacy 244 (2011)
Age of X
- Age of X: Alpha 001 (2011)
- X-Men Legacy 245 (2011)
- New Mutants (Vol. 3) 022 (2011)
- X-Men Legacy 246 (2011)
- New Mutants (Vol. 3) 023 (2011)
- X-Men Legacy 247 (2011)
- New Mutants (Vol. 3) 024 (2011)
- X-Men Legacy 248-249 (2011)
Returning the Missing Personalities
- X-Men Legacy 250-253 (2011)
Relationship with Blindfold
- X-Men Legacy (Vol. 2) 001-024 (2013-2014)
Trauma
- Legion 001-005 (2018)
X-Men: Disassembled
- Uncanny X-Men (Vol. 5) 001-010 (2018-2019)
Age of X-Man
- Age of X-Man: Prisoner X 001-005 (2019)
- Age of X-Man: Omega 001 (2019)
The Krakoa Era
- Way of X 001-005 (2021)
- X-Men: The Onslaught Revelation 001 (2021)
- Legion of X 001-010 (2022)

Additional information from various editions of the Official Handbook of the Marvel Universe.

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