Guardsman O'Brien
Real Name Michael O'Brien
Current Alias Guardsman O'Brien
Affiliation Former member of Project PEGASUS[1]
Base of Operations New York CityNew York; Formerly Project PEGASUS[2]
Identity No Dual Identity
Citizenship American
Marital Status Single
Occupation Guardsman
Gender Male
Height 5' 11"
Weight 195 lbs (88 kg)
Eyes Green
Hair Red
Universe Earth-199999
Place of Birth ChicagoIllinois
First Appearance


Guardsman O’Brien, as he was called by everyone who knew him, was head of security at Project PEGASUS[3], the institute where Dr. James Power was working on a device called the Annihilator for his boss, Douglas Carmody.

When Dr. Power & his wife were captured by the alien Snarks, whom Carmody had secretly been working with, Carmody tried to make profit from the already completed prototype Annihilator by activating it. In doing so started an antimatter chain reaction that threatened to destroy the entire Earth. Realizing the danger, Guardsman O’Brien tried to interfere, but was locked out of the lab by Carmody. Before he had a chance to break open the door, Power Pack & the Snarks arrived at the facility; the former to stop the Annihilator, the latter to steal it. Realizing quickly that the Snarks were the true threat, Guardsman O’Brien aligned himself with Power Pack & had his men fight off the Snark army while Power Pack disposed of the Annihilator by throwing it into space. Afterwards, Guardsman O’Brien saw to it that Carmody was arrested for his part in the near destruction of Earth.

Powers & Abilities


Michael O'Brien has no powers of his own but they are derived from his Guardsman Armor. The Guardsman armor gives him the following powers: 

  • Superhuman strength
  • Life support
  • Durability
  • Sensors
  • Flight with boot jets
  • Repulsor blasters

Strength level

With the armor, he is able to lift up to 40 tons.




Guardsman Armor


Jet boots in the armor.


Repulsor blasters in the armor; police issue handgun.


See Also

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