|“||The Mavericks, Hunters and Repliforce... IDIOTS, all of them! They're making my job too easy!||„|
Double is one of the main villains from Megaman X4.
Double was a spy who worked for Sigma. During the Repliforce Incident, Sigma sends him to spy on Captain Mega Man X's actions. Double disguises himself as a chubby, clumsy worker robot, which easily grants him the trust of X and the other Maverick Hunters. Double then works as X's navigator, always reporting to Sigma on X's progress.
Once X departs for the Repliforce's Final Weapon, Sigma informs Double that his mission is over and that he can terminate the Hunters. So he destroys the Maverick Hunters who mocked him and goes after X to finish him by himself.
At the Final Weapon, he faces X and challenges him. Although X was confused by Double's betrayal, he fights and defeats Double, who mocks X for being so naive to trust him, exploding shortly after.
Appearances in other media
Double makes a cameo appearance fighting against Guile from the Street Fighter universe in Archie Mega Man Issue 51. Double was one of numerous Mavericks duplicated by Sigma-1 using the power of the Genesis Portals to form an army to battle Sonic the Hedgehog and Mega Man's team of allies. However, he and his fellow Mavericks were then attacked by the arriving Street Fighters, with Guile giving Double a taste of his Sonic Boom technique (Sonic not being particularly impressed by the ability's name) and finishing him with a Dragon Suplex.
- Double's sword-arm and evil grin upon showing his true nature is similar to that of Shadow from Mega Man X: Command Mission, another double agent/traitor that served with both Mega Man X and Zero later on.
- Double has a short cameo appearance in the opening scene of Mega Man X5 as flash back of sorts.