![[title] - Uncanny X-Men (1st series) #104](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01-104.jpeg)
Mutant X door seen on Muir Island
![[title] - Uncanny X-Men (1st series) #119](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01-119.jpeg)
kills Angus MacWhirter off-panel
![[title] - Uncanny X-Men (1st series) #125](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01-125.jpeg)
first appearance
![[title] - Uncanny X-Men (1st series) #127](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01-127.jpeg)
merges with his father, Joe MacTaggert
![[title] - Uncanny X-Men (1st series) #128](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01-128.jpeg)
killed and dispersed by Colossus in his metal form
![[title] - New Mutants Annual #7](/sites/default/files/images/covers/newmutants/newmutantsv01-annual07.jpeg)
A.I.M. pays Harness and Piecemeal to collect Proteus’ energy
![[title] - Uncanny X-Men Annual (1st series) #15](/sites/default/files/images/covers/uncannyxmen/uncannyxmenv01annual15.jpeg)
Proteus reforms through Piecemeal
![[title] - X-Factor Annual #6](/sites/default/files/images/covers/xfactor/xfactorv01-annual06.jpeg)
Proteus commits suicide rather than continue existing in a world where he doesn't belong
![[title] - Exiles (1st series) #69](/sites/default/files/images/covers/exiles/exilesv01-069.jpeg)
reincarnated in the House of M
![[title] - Exiles (1st series) #71](/sites/default/files/images/covers/exiles/exilesv01-071.jpeg)
possesses the Exiles' Mimic, begins reality hopping
![[title] - Exiles (1st series) #72](/sites/default/files/images/covers/exiles/exilesv01-072.jpeg)
abandons Mimic for Justice in the New Universe
![[title] - Exiles (1st series) #75](/sites/default/files/images/covers/exiles/exilesv01-075.jpeg)
abandons Justice for Hulk 2099
![[title] - Exiles (1st series) #77](/sites/default/files/images/covers/exiles/exilesv01-077.jpeg)
sends Squadron Supreme against Exiles
![[title] - Exiles (1st series) #80](/sites/default/files/images/covers/exiles/exilesv01-080.jpeg)
possesses Morph in Future Imperfect timeline
![[title] - Exiles (1st series) #82](/sites/default/files/images/covers/exiles/exilesv01-082.jpeg)
behavior modifier machine brainwashes him into thinking he is Morph
![[title] - Exiles (1st series) #90](/sites/default/files/images/covers/exiles/exilesv01-090.jpeg)
cracks in Morph personality begin to show
![[title] - noimage](/sites/default/files/images/covers/misc/noimage.jpg)
Proteus and Morph personalities become co-conscious and cooperative
![[title] - Exiles (2nd series) #6](/sites/default/files/images/covers/exiles/exilesv02-06.jpeg)
Proteus separated from Morph by Crystal Palace
![[title] - X-Men Legacy (1st series) #231](/sites/default/files/images/covers/xmen/xmenv02-231.jpeg)
Proteus reincarnated back on Earth-616
![[title] - Astonishing X-Men (4th series) #1](/sites/default/files/images/covers/astonishingxmen/astonishingxmenv04-01.jpeg)
Shadow King uses Proteus’ energies for himself
![[title] - Astonishing X-Men (4th series) #7](/sites/default/files/images/covers/astonishingxmen/astonishingxmenv04-07.jpeg)
Proteus regains physical form
![[title] - Astonishing X-Men (4th series) #11](/sites/default/files/images/covers/astonishingxmen/astonishingxmenv04-11.jpeg)
dispersed again by the X-Men
![[title] - House of X #5](/sites/default/files/images/covers/houseofx/houseofx05.jpg)
joins the Resurrection Five, using Xavier clone bodies to satisfy his physical needs
blesses the opening of the Moira MacTaggert Memorial Hospital in Lowtown