Arios Orlando

Arios Orlando formerly known as the Hero, is the one of the two main antagonists of the series along with the current reigning Demon Lord. He is the former hero who kicked out his future archnemesis, Rein Shroud of the Hero's Party due to his hatred towards him. After his first defeat by Rein in their duel, Arios has betrayed his teammates and his ancestor' legacy for his vengeance upon Rein but only to be easily defeated by Rein again

Due to his treasons after his second defeat by Rein, he was arrested and stripped from his title as a hero by King Argus and Princess Sarya for violation, as well gotten completely written off as a traitor as well he was imprisoned by humanity for his actions, causing the disbandment of the Hero's Party due to his delusions and betrayal in his weak failed attempt to kill Rein.

He later escaped out of prison with help from Monica (a subordinate of the current reigning Demon Lord) where he join the Demon Lord's army for his vengeance upon Rein, his companions, and humanity (who are now fully recognized Arios as a traitor and acknowledge Rein as their savior) due to him being completely humiliated by Rein again. Despite he escaped, Arios has already been completely branded as a traitor and a most wanted criminal by both King Argus and Princess Sarya due to Arios' betrayal towards humanity. He was replaced by Chiffon Nox as his successor due to his betrayal.

He later transformed into a Demon. He eventually caused the deaths of his teammates for betraying him (rather it was Arios betrayed them) or they were just useless to him now. He allowed Monica to dispose of Leanne, left Aggath to be killed by a group of demons for "betraying" him and lastly for Mina to die along with the holy church's archbishop by a group of demons for betraying him and siding with Rein of her new mission is to kill Arios.

He is the archnemesis of Rein Shroud.

Post-Downfall
Arios is an ignorant and delusional man who refused to learn from his mistakes. He is selfish when and never shown any concerns for Lin, Mina and Aggath because he only viewed them as his disposable pawns as they were never his friends to begin with. He is also incompetent when he and his soon-to-be former fellow heroes were in a complete disadvantage against the demon lord's army because Rein was a pillar to the Hero Party (which they would've defeated the Demon Lord) while Arios is a liability (when he and his former future teammates failed at everything as they were unable to defeat the Demon Lord's army). After his defeat by Rein, Arios drove into insanity when he desired to get revenge on Rein and wanted to kill him for the humiliation Rein and his companions did to him as far as he betrayed the Hero's Party and his ancestor, the First Hero's legacy to defeat the Demon Lord just for his ridiculous accord but only to be defeated by Rein.

He has a xenophobia when he dislikes Demi-humans even from the Strongest Tribes when he sees them to be Rein's "pets" and believing they are no match for him which he is way over his head as he is the one who is too weak against the Strongest Tribes due to his delusions and dimwittedness.

He is cunning and manipulative when he manipulated Edgar Fromware to join him due to them having a common enemy who they despised, Rein. He only viewed Edgar to be his pawn in his disposal due to Arios never caring for anyone other than himself alone. However, this lead to both Arios and Edgar's defeat by Rein and his companions, as well for Arios to lose his status as the "Hero" and has been sentenced to prison for both the crimes he committed against humanity and betrayal towards the Hero's Party and the legacy of his ancestor, the First Hero as far as Arios will always be remembered as a selfish, deluded traitor for the murder of the adventurer and failed attempted to frame Rein Shroud for the crime. While in prison, Arios was driven into even more hypocrisy and insanity, where he became a completely irredeemable and unrepentant villain. He is remained so ignorant and/or he is living in a complete denial when he always believing himself that he is still a hero (despite the fact his status was revoked due to Arios violated his former title) and kept attempting to blame Rein, believing it is Shroud's fault which is nothing but a delusional excuse.

After he escaped from prison as well lost his status as a "Hero" (due to him violated the title) from his second defeat by Rein, Arios became a complete sociopathic and deluded lunatic who was driven into an even more hypocrisy than he was before due to his own blinded hatred towards Rein gotten the better of Arios when his archnemesis, Rein has ruined his reputation as a "Hero" and humiliated him as well as for Arios to be completely written him off as a self-deluded traitor by humanity. For being completely insane and delusional, Arios wants to kill not only Rein and his companion but also humanity itself (after Arios now recognized as a traitor) by working for the Demon Lord (the ruler of the demons who Arios was chosen to defeat) showing that Arios has became a vile and filthy misanthrope when he has no remorse or sheds of humanity left inside of him. He is more deluded and persistent when he still believed he will kill Rein. Blinded by his delusions of grandeur, Arios became a pure evil lunatic when he has completely abandoned any traces of remorse or sheds of humanity he once had. He hold a complete grudge on King Argus and his daughter, Princess Sarya and wanted to get revenge on them for not only revoked him as a Hero and completely written him off as a traitor, but also deemed him as a greatest threat and most wanted criminal to humanity when they put a price on Arios' head, dead or alive. Arios is remained treacherous as ever as he betrayed and sacrificed Leanne when he ordered Monica of disposing Leanne to her death at Rein's hands without a second thought, believing it was necessary just so he would get his revenge on Rein, shown just how filthy and heinous he truly has became as Arios still cares for nobody but himself because he is completely consumed by his delusions of grandeur. He is also a bond destroyer when his betrayal towards Leanne also deeply impacted to both Aggath and Mina, causing them to betray Arios and wanted their so-called "friend" to die after seeing he became a completely insane lunatic who is permanently blinded by his delusions of grandeur and hatred towards Rein.

He has no tolerance for betrayals or weaknesses. He left Aggath to be killed for "betraying" him (in truth, he betrayed Aggath and the others when he took things too far). He allowed Monica of disposing Leanne when he had no more use for her after Leanne was demonized by Monica and killed by Rein and his companions. He intended to kill Mina for betraying him and siding with Rein which led to Mina dying along with the holy church's archbishop at the hands of a group of demons.

Monica Eclair
Monica is the one who completely corrupted Arios to joining the Demon Lord's army for his vengeance on Rein. He allowing Monica of disposing Leanne when he has no more use of her and the others.

Demon Lord
Originally his enemy, but now his ally. Arios only joined the Demon Lord for his vengeance on Rein and humanity.

Edgar Fromware
Arios formed an alliance with the tyrannical mayor, Edgar due to them sharing a common enemy (Rein). Arios offered the cursed ring to Edgar which he accepted if that what it meant for him to steal both Sora and Luna from Rein. However, Edgar has failed Arios and presumably dead when he was beaten into a bloody pulp by Edgar's former slaves (who were freed by Rein). Arios only viewed Edgar as a mere pawn and completely fine as he didn't care about Edgar at all.

Rein Shroud
The former Hero Arios is Rein's former teammate and now his archenemy. Arios banished Rein from the Hero's Party believing he was useless to him. When he and his party are unable to proceed into the Lost Forest without Rein, Arios and his party decide to ask Rein to lend a hand, believing that Rein would never refuse their request. Arrogantly, Arios asked him to accept the job as if he were favoring them. Arios notices that Rein is with the strongest species which surprised him. Tania asks Arios and his party to apologize to Rein and Arios did but took it for granted which made Tania say that they should prostrate themselves and sincerely apologize to Rein. This made the hero party very angry. In anger, Arios called Rein's companions just his pets and playthings which made Rein very angry and hastily beat Arios on the face. At this refute, Arios challenged Rein into a duel. Rein easily defeated Arios due to his newfound powers. Rein felt surprised to feel refreshed after beating them. Though he apologizes as Tania said, for being humiliated by Rein, Arios was driven into insanity when he wants to kill Rein using any means. When he started looking for a recruit as a beast tamer, he came to know that Rein is an unusual tamer which filled him with deep hatred. He manipulated Edgar Fromware as a pawn for killing Rein by giving him a ring to summon Death Scythe but in the end, it failed and Edgar was easily defeated. Since then, he single-mindedly makes attempts to kill him, but only to be defeated by Rein again. After breaking out of prison followed with his second defeat where he lost his status as a Hero and is always remembered as a traitor, the completely deranged Arios wants to kill Rein, his friends and humanity itself as Arios joined the Demon Lord just for his vengeance on Rein. Rein has no choice but to kill Arios for not only escaped from prison but also caused the deaths of Aggath, Leanne, Mina and innocent lives as soon Rein realized that Arios is purely evil and beyond any hopes for redemption.

Aggath, Leanne and Mina
Aggath, Leanne and Mina were Arios' teammates and indirect killed victims. Arios cares nothing about them as they were just pawns to him and Arios never sees them as his friends. Even after joining the demons where he lost his title as a hero, he still hold no concerns for them. He let his teammates to their deaths when he is done using them, believing their sacrifices would allow him to exact revenge on Rein.

Aggath, Leanne and Mina were loyal towards Arios. This was until he betrayed them and caused their deaths. Leanne was disposed by Monica under Arios' orders where she was killed by Rein, Aggath was left to be killed by the demons under Arios' commands for "betraying" him and lastly Mina died along with the Holy Church's archbishop by the demons where she betrayed Arios and formed an alliance with Rein of her goal to kill Arios.

The Shrouds
Due to him being an xenophobic, Arios hates Rein's companions who he considered them to Rein's "pets". He thinks he is stronger than them only to shown in reality, Arios is weaker than Rein's companions as he and his teammates were easily defeated by Rein, Kanade (from the Cat Tribe) and Tania (from the Dragon Tribe) in their duel. After he escaped from prison, Arios wants revenge on Rein and his companions as well as humanity.

Rein's companions also hates and look down Arios when learning he banished Rein. They've treated Arios like a worthless piece of trash as well Tania and Kanade (who are the worst among Rein's companions) treated Arios nothing more than a filthy worm. They also viewed Arios to be an incompetent weakling who stood no chance against them as they (along with Rein) easily defeated him and his teammates in their duel. One of them, Tania wants to fight Arios just so she would make him suffer of his ignorance and delusions of grandeur. After Arios was arrested and stripped from his title as Hero, Rein's companions expressed no sympathies for a man (who they've always viewed him as a worthless garbage) due to their hatreds towards this deluded idiot. After learning he had escaped from prison, Rein's companions wants nothing more but to kill Arios once and for all to bring an end to his delusions of grandeur.

Argus Van Rollreeze
Arios is the former hero that Argus chosen but very carelessly due to Arios' twisted personality. Following his betrayal after Rein defeated Arios again, King Argus shown enraged of Arios' delusions of grandeur and violation to his title as a Hero where the King hereby revoked Arios from his status as a Hero and placing this deluded idiot under arrest, for his betrayal towards him and the murder of a member of the Adventurer's Guild as well completely written Arios Orlando as the self-deluded traitor. When the King went to Arios' cellblock, Argus is still annoyed by Arios' delusions of grandeur and announced to him that he will be executed within two days. When Arios escaped from prison due to Monica Eclair, King Argus has no choice but to place a bounty on Arios' head where he is humanity's most wanted criminal, dead or alive. The only reaction that Argus shown for Arios was nothing more than an extremely disgust due to Arios' delusions of grandeur and violation of his status as a Hero.

Arios now holds a complete hatred towards the King and cursed Argus for stripping him of his title as a hero and completely written him of as both a delusional traitor and humanity's worst criminal.

Princess Sarya
Like her father, Sarya completely hates Arios for his delusions of grandeur. When realizing that Arios is the culprit for the murder of a member of the Adventurer's Guild, Princess Sarya ordered her knights to place Arios under arrest when she called him as a traitor instead of a hero. For violating his status, Sarya used a magical tool to revealed Arios was a liar and the real culprit to her father which caused King Argus to announced of revoking Arios of his status as a hero and thrown him to the cellblock. Much like her father, Sarya also considered Arios to be nothing more than a delusional moron. After hearing Arios has escaped due to Monica Eclair, Sarya (as well as her father, King Argus) has no qualms of placing a price on Arios and completely labelled Arios as humanity's worst criminal.

Arios now completely hates the princess for revealing his true identity as a traitor who allowed the murder of a group of members of the adventurer's guild and in his failed attempted to frame Rein for it, completely writing him off not only as a traitor, but also as a most wanted criminal, dead or alive.

Abilities
Even though his personality is too wicked, he still have some abilities of being a former hero. However, his abilities are too weak against Rein.(who gained power by making contracts with Demi-Humans from the strongest tribes).
 * Expert Swordsman: Since he is the ex-hero, he knows how to swing the sword properly. According to Rein, he is a master of sword. However after he lost his holy sword along with his other equipment (when he was stripped as a hero), he lacked other proficiencies such as hand-to-hand combat leaving him relentlessly useless and defenseless due to him being weak.

Magic

 * Gigabolt : A lightning strike magic.
 * Lunatic Bolt

Trivia

 * Arios had become beyond help by the start of the series. Despite being a Hero meant to save and help EVERYONE, regardless of class, he cared more about getting benefits from being affiliated with nobles; seeing his job as Hero is little more than a burden.
 * Rein Shroud is whom Arios blames as the catalyst for his downfall. While he's technically correct, it's more due to Arios being an absolute jerk who kept picking fights with Rein, even after the guy kept POTLITELY to get rid of him. As the result of each defeat, it bruised his ego and made him vengeful against the real victim.