The X Robots are Dr X's main strike force. their face is shaped after Dr X himself.
Direct to video movies
The X Robots first appear in Action Man: Robot Atak, where they seem invincible at first, until Action Man finds their weak spot: a panel on their chests that, when hit, makes them explode.
The X Robots appear again in Action Man: X Missions, attacking the ISD facilities. This movie also shows the "Absolute Zero" unit, who is defeated by Flynt.
The X Robots make a final appearance in Action Man: Código Gangrena.