Double

He is a supporting character. At first appearing to be a simple rookie Maverick Hunter, it is later revealed that he was a spy working for Sigma all along.

Personality: Double is initially presented as a incompetent and clumsy member of the Maverick Hunters with an earnest personality, who is eager to serve as X's aide, showing concern for him and advising him. However, this is a ruse he puts on as a double agent working for Sigma, and his true nature is that of a sadistic and violent Maverick. Upon revealing his true form, he mercilessly slaughters the Maverick Hunters who were ridiculing him before going after X, where he reveals he thinks the Mavericks, the Hunters, and Repliforce alike are fools who made his job too easy, and looks forward to ripping X apart. Despite his insane personality, Double has enough discipline and cunning to fool the Maverick Hunters with his bumbling personality before he is called on by Sigma.

Appearance: In his first form, Double is a short and tubby Reploid. His face is pudgy and his body shape is almost entirely spherical, giving him an unintimidating and goofy appearance. His armor is yellow and brown, and his helmet has a mouth guard that somewhat resembles that of an American football helmet. He possesses a belt around his waist with several red capsules attached. However, his true form is much more menacing. His body expands, making him much more tall and lean, and revealing most of his armor is translucent and full of what appears to be a pink fluid or gel. His feet, shoulders, and helmet gain large spikes and horns. His eyes also become red with green outlines, and his face turns into a slender sneer. His arms also possess generators that can create purple beam knives.

Abilities: Tackle: Double leaps to the ceiling before descending on the player with a beam knife. Upon landing, he dashes horizontally or diagonally towards them with his beam knife again. Double cries "Devil Slash" when using this move.

Light Shot: Double throws a spinning energy disc at the player. After losing half his health, he throws two discs at a time.

Wave Shot: Double floats on one side of the arena to release two wide energy waves, which the first has to be dashed under while the second has to be jumped over. He only uses this attack when half his health is depleted, and this attack is always preceded by a Tackle.

Split Attack Cutter: When struck with his weakness, Double Cyclone, Double releases two blobs that become attack drones. They may become spinning blades that bounce around the arena, or they may become a Bat Type which floats above the player to fire shots downwards.