Petelgeuse Romanee-Conti

Petelgeuse Romanee-Conti (Simply known as Petelgeuse and erroneously as Betelgeuse) Is the main antagonist of the Arc 3 of the Re.Zero manga as well as for the second half of the anime. He is one of the Sin Archbishops of the infamous Witch Cult, representing the sin of sloth.

History
Originally Petelgeuse's actions result in the Roswaal Manor's pillage and the death of multiple characters. But the protagonist, having the power to coming back in time after his death, tries to prevent the slaughter.

Petelgeuse is first seen ordering all preparations for his Ordeal in a secret cave, when his cultist suddently brought an unconscious Subaru with the scent of the Jelaus Witch, something that can be perceived by magic users. When he wakes up, Petelgeuse wonders if the boy is the future Archbishop of Pride. Meanwhile a cultist informs Petelgeuse that the dragon carriage was destroyed and the boy bringed in his presence. Exalted by how his cultist managed to do as he told them, he begins to overjoy himself of such "diligence" of his followers. But suddently, the cultist informs that the girl, Rem, that accompanied the boy was missing, which changes the Archbishop's mood and brutally beats his underling to death, short after crying over the sloth of the Witch Cult, he demands that the girl must be found: Alive or dead. When the others retreat, Petelgeuse begins questioning Subaru, when suddently Rem appears from the entrance of the cave, and begins killing cultist members, until Petelgeuse release his Authority of Sloth and strangles the girl, then proceeds to lecter Subaru about how his actions of giving up and locking himself up in his thoughts practiced the sloth, and because of that, he killed her, and begins twisting Rem's body with his force fields near to death.

While Subaru begins screaming the name of Petelgeuse, he orders his subordinates to retreat and march forth the Roswaal Manor, where he killed Emilia and everyone near. All his actions were reverted after Subaru went back in time after being killed by Puck, the spirit guardian of Emilia.

Petelgeuse returns again with the Witch Cult after Subaru, accidentally kills Emilia. Seeing him now as a complete stranger with a familiar scent (Due to Subaru's time-traveling habilities, his experience in the cave was erased) He applauds the youth's diligence for doing his work for him and bringing Emilia's body for him. When Petelgeuse readies his Unseen Hand, Subaru steps back with Emilia's corpse, atonished, Petelgeuse remains silent, for no one had seen his Authority Over Sloth until now. His thougts are interrupted when Puck appears for avenging Emilia; Killing the cultists and freezing Petelgause to death, with the last remaining defiant to the spirit to the end. Because Subaru dies short after, Petelgeuse's death, as well as his actions, are reversed again.

With Subaru now knowing where and why the Witch Cult will attack, he meets Petelgeuse outside the cave when he first meet him. Petelgeuse wrongly greets him as an unknown cultist and asks where his book of gospel is, in order to verificate if he truly is a member of the Witch Cult, but Subaru set a trap that collapsed the cave and, with the help of Wilhelm, he slice Betelgeuse in a half. Unknown to Subaru, Petelgeuse can come back from the death and posses bodies with the Jelaous Witch scent, and begins possesing various members of the Witch Cult, with Subaru and his company killing them all. When he is cornered, Petelgeuse decides to take profit of the Witch Scent within Subaru and take control of him, remaining some consciousness, Subaru ask Felix to kill him, without fully understanding, Felix deals a finishing blow to Petelgeuse-Subaru. With his death, Luckyly Petelgeuse didn't take Subaru's powers, but he was sent back in time.

This time, Subaru ends all of Petelgeuse's cultists before confronting him personally, when Subaru and Julius cornered Petelgeuse, he began summoning his Unseen Hand, with Julius enchanting Subaru's eyes in order to see the Hands, he begins slicing the hands, until he wounds Petelgeuse. Desperately, he releases his spirit form in order to posses Subaru, but when he does, the Scent of the Jelaous Witch rejects him. With tears in his eyes, Petelgeuse feels that his beloved has abandoned him, and violently begins to smash a near mountain with his Unseen hands, until a rock falls and crushes his body.

Petelgeuse apparently survives after that, but now needing his Unseen hands to subject his body, he takes the form of a wild animal and begins chasing Subaru in a dragon carriage. The presecution ends when his hand is crushed by the wheel of the carriage, dragging what's left of Betelgeuse into the wheel and dismembering him completely, killing him for good. With his death, the rest of the cultists were captured or killed and the, and now the Clergy of Sin followed Subaru more cloosely.

Personality
A truly dangerous individual, Petelgeuse takes his adoration for the Jelaous Witch very seriously, to the point of being obsessed with resurrecting her. He sees her as someone who has send her love to him, and now he was meant to repay his love with all his might. Even after the Witch rejects him, Petelgeuse is still willing to sacrifice his life for her. His rare and wild manners are only a hint of his profound and permanent psychosis, enjoying bringing great pain on others and even to himself in moments of self-pity or stress. Petelgeuse is greatly pleased to see others carrying out his duties diligently, even more if love is the reason behind such duties. Although he is the Archbishop of sloth, he gets angered and frustrated with actions leaded by resignation, surrender, hoplesness, even if those actions minimally  derive from sloth.

Tvivia

 * According to the author, he is the most benevolent out of all the Sin Archbishops
 * His appereance and mannerism resemble vaguelly of Caster
 * When the first season of the anime ended, Petelgeuse was regarded as one of the most memorable characters in the show.
 * His role is similar to the villaing Gates
 * Both of them are the set up for the primary antagonistic faction, with Petelgeuse being the Witch Cult and with Gates Being Amalgam.
 * Additionaly, both of them present themselves and act in a similar way.