Butler

Overview Butler is a crazed mercenary of French nationality who terrorized the Greens and Oranges. He served as the final antagonist of season 1 and one of the main antagonists of season 2. Personality

Butler takes great pride in his status as a high-class mercenary. He claims to have never failed a contract; this explains his obsession with defeating the Odd Men Out, as he cannot conceive the idea of his first loss being to a group of untrained idiots. He has a particular hatred for Leo, whom he views as a rival and possible equal. He constantly refers to Leo as "the freak" and goes to great lengths to take down the immortal man.

As the Odd Men Out continue to evade Butler's grasp, the mercenary grows more and more frustrated, leading to an increasing amount of mental instability. He becomes more insane and violent over time, coming to the point of uncontrolled rage against the other characters, a major contrast from his initial, more reserved appearance. In the end, he is overwhelmed by the combined efforts of the Odd Men Out and defeated, much to his disbelief. He is carried out of the canyon by Seth.

Butler views the entirety of the Odd Men Out with distaste, and later, hatred. His mission with them transforms from a simple business contract to a personal vendetta, and he stops at nothing to kill them all. His defeat at their hands has ruined his reputation among the mercenaries; it is currently unclear what he will do when he returns to good health.

The Necromancer initially seems to be a source of awe for Butler, as he states he could learn a thing or two from the ancient being. However, he quickly wisens up to the way the Necromancer treats his allies, and when asked to join him, steadfastly denies the offer. The Necromancer proceeds to knock out Butler, who takes a major issue with the attack and later charges the Necromancer head-on in revenge, only to be quickly defeated again.

Butler and Seth seem to find some sort of alliance together in their situation, as they are both outsiders of the Odd Men Out. While Butler claims he will "kill Seth last," he eventually appears to cease attacking him altogether. Indeed, he most likely owes his life to Seth now, as it is Seth who carries Butler to real medical assistance and safety. Trivia
 * Butler's real name is Francis Ashole which (as Joey points out) is remarkably similar to "French Asshole".
 * Butler was voiced by Gracia Charles in season 1. He is voiced by Hugh Verheylewegen in Season 2, as Gracia Charles was unable to reprise his role as Butler.
 * Hugh added a slight Scottish accent to Butler's voice. This is referenced in Fan Mail Episode 2, when Chronicler confirms that Butler is French. Muppet, the guest star for that episode, states that he thought that Butler was French-Scottish. Chronicler claims that this is close enough. As Muppet's appearance there is non-canonical, Butler's possible French-Scottish nationality remains only a possibility.
 * It is possible that Butler's name is a reference to the Artemis Fowl book series character. This is even suggested by Leo in Season 2. Butler says he picked the alias because he thought "it is cool."
 * Butler's theme is "Siege Mode Activated"
 * Butler shares some similarities with Felix, a recurring antagonist from the Chorus Trilogy of Red vs. Blue. Apart from being sociopathic mercenaries with huge egos, both their actions are initially fueled by greed before said-characters in question develop a strong hate-fueled drive to kill the main cast. Both also use a DMR and Hardlight Shield as their primary weapons.