10 Isekai Villains Who Unjustly Triumphed

1. Naraku (Inuyasha): Naraku, the main antagonist of Inuyasha, is a cunning and manipulative half-demon who continuously schemes to obtain the powerful Shikon Jewel. Despite his treacherous actions and cruel intentions, Naraku manages to achieve several victories throughout the series, causing immense suffering to the protagonists.
2. Betelgeuse Romanee-Conti (Re:Zero − Starting Life in Another World): Betelgeuse is a deranged and sadistic archbishop of the Witch Cult. With his ability to possess and control others, he becomes a formidable threat to the protagonist, Subaru. Despite his distorted mindset and merciless actions, Betelgeuse manages to achieve temporary triumphs, leaving a trail of devastation in his wake.
3. Ainz Ooal Gown (Overlord): Ainz, initially a player in a virtual reality game, becomes an all-powerful undead being in the fantasy world he gets trapped in. As the ruler of the Great Tomb of Nazarick, Ainz often acts as an antagonist, displaying a ruthless and merciless demeanor. Despite his questionable moral choices, Ainz’s overwhelming power allows him to achieve victories against his foes.
4. Reinhard van Astrea (Re:Zero − Starting Life in Another World): Reinhard is hailed as the “Sword Saint” and possesses unparalleled combat skills in the world of Re:Zero. While not explicitly a villain, his overwhelming power and unyielding sense of justice can lead to outcomes where he emerges victorious, even if it means opposing the protagonists’ goals.
5. Witch of Envy (Re:Zero − Starting Life in Another World): The Witch of Envy, Satella, is a powerful and enigmatic antagonist in Re:Zero. Despite her tragic past and the suffering she has endured, her overwhelming powers and desire for revenge often lead to her achieving victories, causing chaos and despair for the protagonists.
6. Kazuma (KonoSuba): Kazuma, the main character of KonoSuba, is not typically portrayed as a villain. However, his unconventional and often self-serving actions inadvertently lead to disastrous consequences for those around him. Despite his questionable decisions, Kazuma’s luck and resourcefulness sometimes result in outcomes that benefit him, even if they may seem undeserved.
7. Betraying Hero (The Rising of the Shield Hero): In this isekai series, the Shield Hero, Naofumi, faces betrayal from a fellow hero who falsely accuses him of heinous crimes. Despite the protagonist’s noble intentions, this villain’s deceitful actions allow them to temporarily triumph, tarnishing Naofumi’s reputation and causing him great hardship.
8. Subaru’s Witch Cult Enemies (Re:Zero − Starting Life in Another World): Throughout the series, Subaru confronts various members of the Witch Cult, a group of fanatical followers of the Witch of Envy. These villains, driven by their twisted beliefs and desire for power, manage to temporarily overpower Subaru and pose significant threats to his life.
9. Demon Lords (That Time I Got Reincarnated as a Slime): The world of That Time I Got Reincarnated as a Slime features several powerful Demon Lords who aim to expand their influence and dominate the land. Despite their malicious intentions and destructive abilities, some of these Demon Lords achieve victories, inflicting suffering on the protagonists and their allies.
10. Gabriel Miller (Sword Art Online: Alicization): Gabriel Miller, also known as Subtilizer, is a cunning and ruthless individual who exploits the virtual world of Underworld for personal gain. His malicious actions and manipulation of others lead to significant setbacks for the protagonists, allowing him to achieve victories that are undeserved and harmful.

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Sesshomaru,Jaken,Rin,A-Un,Kohaku