Sigma/Maverick Hunter X

"Listen well, X. There are times when we Maverick Hunters cannot afford to hesitate in pulling the trigger. We must become both sword and shield to those who cannot protect themselves - that is our sworn duty. Never forget that!"

- Commander Sigma before his rebellion

"It's not over yet, X! The battle! The angst! The destruction! I will make you understand the true potential of Reploids!"

- Sigma as a Maverick

Sigma is a character from Mega Man Maverick Hunter X, a Reploid that was originally the leader of the Maverick Hunters, but betrayed them and Humaninty, becoming the leader of a Maverick army.

The Day of Σ
Sigma appears in a short unlockable OVA in the game Mega Man Maverick Hunter X for the PSP entitled "The Day of Σ". It shows the Maverick Hunters prior to the events of the game under Sigma's command, before he ultimately revolts, declaring total war on humanity. It should be noted that the events in this OVA coincide more with the canon of Mega Man Maverick Hunter X than with that of the original game.

Quotes

 * "I see a new clarity in your eyes. You are no longer troubled."
 * "X... That look in your eyes makes me think you might be ready to face me. But why don't you try this on for size first!"
 * "Impressive, X... It looks like you really do have the potential I had seen in you. Our potential is limitless..."
 * "That's not what you really think."
 * "You say you believe in justice. But that's not true. You've only been lead to think that. Nothing more!"
 * "Magnificent, X! And to think you've been classified as a B-Class Hunter! Ha ha ha ha!"
 * "Mwah hah ha! Hah ha ha ha ha ha!"
 * "It's not over yet, X! The battle! The angst! The destruction! I will make you understand the true potential of Reploids!"
 * "I need your help... to defeat X."
 * "Yes. In order to ensure our future and speed along our evolution."
 * "His...worrying... That is precisely the quality that will prove beneficial to our cause. He alone possesses that ability. He thinks more deeply than the rest of us. He feels... normal Reploids are no match for his art. But... he is unaware of his incredible power."
 * "Precisely."
 * "That's why I've come here."
 * "I won't force you; this isn't something most Reploids could do. I need someone who can go Maverick of their own accord."
 * "Vile... My supporters have been revolting across the land. What is your plan?"
 * "Hm. Very well."
 * "Vile... So this is your way of handling things?"
 * "Hm... Interesting... Why don't you come find me using your methods? I want to see you in action with my own eyes."
 * "What exactly did you plan to do, Vile? Would you stand before me as a Maverick Hunter? Kneel at my feet and place yourself at my mercy?"
 * "Retrieve Vile."
 * First phase
 * I'll take you on! Here I come, X! (pre-battle)
 * This is for you! (when using his eye-lasers)
 * I should have known... you could... do it, X! (after losing all his health)
 * Second phase
 * X! (When attempting to slam his hands on X)

Trivia

 * There was a slight change in music prior to confronting Sigma upon defeating Velguarder. In the original game, Sigma, when appearing to confront X personally, had the pre-Fortress battle music playing. In the remake, an entirely new tune was used for his interactions with X during this time.
 * On a similar note, in the original game, he warped out just before the Velgaurder boss fight, and only returned after Velgaurder was destroyed. In the remake, he was present the entire time and saw the entire fight.
 * A similar change of music was also present in regards to the leadup to the Wolf Sigma boss fight, partly due to the inclusion of a voiced cutscene before the battle. Originally, the second phase theme started playing as Sigma's head merged with the mech. In the remake, it played after the boss health bar filled up, with a lower mix of the Day of Sigma theme playing during the cutscene leading up to the boss battle instead.
 * Even though Sigma in this game got his scars from X as established in The Day of Sigma, the image of Sigma's face that appeared just before the battle against Wolf Sigma has him sporting similar injuries to the ones Zero inflicted upon him in the flashback from Mega Man X4.