Machine Man
Avengers Chronology
Emperor Doom
Avengers 287-290
Avengers West Coast Annual 5
Avengers Annual 19
Avengers West Coast 83
Avengers (III) 1-4
JLA/Avengers 4
Avengers 501-503
Emperor Doom
Avengers 287-290
Avengers West Coast Annual 5
Avengers Annual 19
Avengers West Coast 83
Avengers (III) 1-4
JLA/Avengers 4
Avengers 501-503
Name X-51
Place of creation Broadhurst Center for the Advancement of Mechanized Research, Central City, California
Height 6'0"
Weight 850 lbs
Eyes Red
Hair Black (artificial)
Occupation Counter terrorist, adventurer, insurance investigator
Identity Secret
Legal status Undetermined
Marital status Inapplicable
Aliases Aaron Stack, Jack Kubrick, Sentinel Supreme, Mister Machine
Family Abel Stack (creator), X.E.R.O. ("brother")
Group affiliations Avengers, Heavy Metal, Nextwave
First appearance 2001: A Space Odyssey #8
Became an Avenger in Avengers West Coast #83
fb = flashback
bts = behind the scenes
~ = stories that take place at the same time
(##) = (volume number)
#/# = book number / second or third or... story
in the book