Bartholomew Aaron Stack (Earth-166)

{{Character X
 * CurrentAlias             = Machine Man
 * RealName                 = Bartholomew "Barry" Aaron Stack (legally changed from Z2P45-9)
 * Image                    = Barry Stack (Earth-166) 007.png
 * ImageSize                = 250px
 * EditorialNames           =
 * Aliases                  = X-51, Barry Witherspoon, Aaron Stack
 * Identity                 = Known to Authorities
 * AlienRace                = Robots
 * Alignment                = Good
 * Affiliation              = {{m|A.R.M.O.R. (Earth-166)|A.R.M.O.R.}}, formerly {{m|Avengers (A.I.) (Earth-166)|Avengers A.I.}}, {{m|Secret Avengers (Earth-166)|Secret Avengers}}, {{m|Fifty-State Initiative (Earth-166)|Fifty-State Initiative}} ({{m|Lightning Bolts (Earth-166)|Lightning Bolts}}), {{m|Nextwave (Earth-166)|Nextwave}}, {{m|Heroes for Hire (Earth-166)|Heroes for Hire}}, {{m|Avengers (West Coast) (Earth-166)|West Coast Avengers}}, {{m|Heavy Metal (Earth-166)|Heavy Metal}}, Machine Men project
 * Relatives                = Dr. David Stack (father), Aaron Stack ("brother") (formerly thought to be his previous form)
 * Universe                = Earth-166
 * BaseOfOperations        =
 * Gender                  = Male
 * Height                  = 6' 1"
 * Weight                  = 286 lbs
 * Eyes                    = Red
 * Eyes2                   = (formerly gold due to artists' error)
 * Hair                    = Black
 * DistinguishingFeatures  =
 * Citizenship             = American
 * MaritalStatus           = Separated
 * Occupation              = Adventurer, formerly employee of an insurance agency
 * Origin                  = Robotic body seemingly filled with a human soul, now acts as a vessel of the heroic world.
 * PlaceOfBirth            = Unknown
 * PlaceOfDeath            =
 * Creators                = Uncanny X-Factor
 * Last                    =
 * First                   = Machine Man Vol 1 #1
 * Quote                   = No, I don't care. I am not here to care. I am here to be a machine.
 * Speaker                 = Barry Stack
 * HistoryText             = ===Origin===

"An Undead, Orphaned Cyborg Freak"

 * Powers                  =


 * Abilities               =
 * Weaknesses              =
 * Equipment               =
 * Weapons                 =
 * Personality             =
 * Notes                   = *Bartholomew Aaron Stack is the Earth-166 counterpart of X-51 (Earth-616) (better known as Machine Man).
 * This character's idea came about when trying to figure out a way to incorporate Draft227's alternate version of Amygdala into the strictly-Marvel SigmaVerse. Given the common first name, X-Factor had the idea to merge them. The resulting idea involved a mentally ill patient who was experimented on by the Leader, and later placed into a robot body. The Hulk aspect was removed to create the full Machine Man seen here, and the Hulk aspects were solely retained for SigmaVerse's Aaron Stack.
 * In canon, Z2P45-9 took the name "Bartholomew" because Barry sounded like Aaron. In our world, it's to match the Barry Witherspoon aspect of his counterpart.
 * Whenever Aaron is forced to use a different name to go undercover, he uses the name "Barry Witherspoon." This is a further allusion to the Earth-616 character.
 * Trivia                  = *In researching the character, Machine Man became one of Uncanny X-Factor's new favorite characters.
 * Barry's role in the Heroes for Hire replaces that of Dane Whitman in Earth-616's continuity.
 * As soon as he hit the public radar, Barry was inducted into SHIELD's superhuman index. It has been hinted on more than one occasion that SHIELD is responsible for the Machine Man project, meaning they would have known of him even before he was created.
 * Due to his encounters with The One Above All, Barry Stack believes in God.
 * Barry Stack is intended to be a full reboot of the Machine Man, while the Ultimate version stays closer to the classic version.
 * Uncanny X-Factor has condemned the song written for the character by the band Powerman 5000 and written his own song in response. It was never released.
 * X-Factor also tried to remove all "metallic" references to/origins of the character, but included the mental illness intentionally to make him more realistic.
 * Barry has openly admitted that if he were a human, he would be an alcoholic.
 * When Barry realized he no longer contained the essence of Aaron Stack, he went into isolation in the desert for a week and did nothing but drink and cry. When he returned, he only allowed people to call him Bartholomew. He told no one of this.}}