Sigma/Mega Man X5

Sigma is the final boss from Mega Man X5, appearing in Zero Space for a final battle against X or Zero.

First form
After the battle between X and Zero, the winner goes after Sigma, facing him in his new body, dubbed Psycho Sigma (サイコシグマ). Psycho Sigma largely uses similar maneuvers as in the first fight against him in Mega Man X, only using destructive waves instead of his laser sword.

Attacks:


 * Dash Tackle - Sigma dashes and moves up and down the walls as if wall kicking.
 * Hell Spark - Sigma launches spheres.
 * Hell Blade - Sigma releases a large wave.
 * Sigma can also generate Sigma Viruses that rotate around his body to protect him.

Second form
After his defeat, Sigma appears with a gargantuan body named Final Sigma W (ファイナルシグマW). It is incomplete, but is still very powerful, giving trouble to the tired Maverick Hunters. It is speculated that this body may have been made by Dr. Wily due to the W on the name and Sigma's quotes after his first form is defeated.

Attacks:


 * Missile Punch - Uses the rockets on the hands to punch the target.
 * Rear-end Bomb -
 * Thunder Attack -
 * Purple Cube Attack - Releases purple cubes.
 * Charge Shot -

After his defeat, Sigma turns into "Slime Sigma" (スライムシグマ), attempting one final attack against the Maverick Hunters. Sigma releases a beam from his mouth that pierces the two Hunters, but before falling, Zero takes him down with a shot. He is never directly fought in this form, due to it being a cutscene.

Other appearances

 * Psycho Sigma is fought alongside Zero Nightmare in stage 6-3 from the X Challenge mode in Mega Man X Legacy Collection 2.
 * Psycho Sigma is a skin for Sigma in Marvel vs. Capcom: Infinite.
 * Psycho Sigma appeared in Rockman X5 IF and Rockman X5.

Damage Data Chart

 * Mega Man X5 Damage Data Chart (X)
 * Mega Man X5 Damage Data Chart (Zero)