Top 10 Greatest Anime Villains of All Time

Light Yagami is the main protagonist of the Death Note series. After discovering the Death Note, he decides to use it to rid the world of criminals. His killings are eventually labelled by people of Japan as the work of "Kira."
Anime: Death Note

Madara Uchiha was the legendary leader of the Uchiha clan. He founded Konohagakure alongside his rival, Hashirama Senju, with the intention of beginning an era of peace.
Anime: Naruto Shippuden

Like most other villains in Dragon Ball Z, Frieza has an ego to match his power. He also has a sardonic wit and explains in "Face Off on Namek" that the three things he refuses to tolerate are cowardice, bad haircuts and military insurrection, and subsequently declares that Vegeta possesses all three of these qualities.
Anime: Dragon Ball Z

Sosuke Aizen is a fictional character and the main antagonist for most of the first half of the manga series Bleach created by Tite Kubo.
Anime: Bleach

Hisoka Morow is a Hunter and former member #4 of the Phantom Troupe; his physical strength ranked third in the group. He is always in search for strong opponents, and would spare those who have great potential, such as Gon and Killua in order for them to get strong enough to actually challenge him. His main goal is to have fun, and to do so with his self-serving way.
Anime: Hunter X Hunter

Nagato was a shinobi of Amegakure and descendant of the Uzumaki clan. Forming Akatsuki alongside his friends (and fellow war orphans) Yahiko and Konan, Nagato dreamed of bringing peace to the violent shinobi world. However, following Yahiko's death, Nagato adopted the alias of Pain and, along with Konan, began leading a new Akatsuki; one that would force the world into peace using any means necessary.

Johan Liebert is the titular monster and the main antagonist in the manga and anime series Monster. He is a ruthless and psychopathic serial killer whose life was saved by Kenzo Tenma as a child. He is also the twin brother of Nina Fortner.
Anime: Monster

Envy is the embodiment of some of Father's envy. Envy is genderless, and has the ability to shape-shift. This ability can be used to assume the form of any existing person (or original personas that Envy itself creates). It can even modify its own voice to directly copy others.
Anime: Fullmetal Alchemist

Naraku was a spider hanyō who was born from the human, Onigumo and various other yōkai, and the primary antagonist of the InuYasha series.
Anime: Inuyasha

Shishio Makoto, known in the English anime in Western order as Makoto Shishio, is a fictional character from the Rurouni Kenshin manga series created by Nobuhiro Watsuki. He is the primary villain of the series' Kyoto arc.
Anime: Rurouni Kenshin