Johann Liebert in the anime series, Monster, is one of the greatest anime villains of all time.
Aizen is a shinigami (soul guardian or reaper) in the anime series Bleach, affiliated with Soul Society.
Hisoka is an antagonist in the anime series Hunter x Hunter. He is a magician and serial killer driven by a desire to become the strongest man possible.
Annie Leonhart (from Titans) is one of the few influential female villains. Initially, he is portrayed as a hero working for the military police.
Light Yagami is one of the Top 10 Anime Villains. He is the main protagonist in the Death Note series.
King Bradley is one of the main antagonists in the animation series Fullmetal Alchemist.
When the Washimine Group and Hotel Moscow become embroiled in a gang war, low-level promoter Chaka saw this as his opportunity to rise to the top.
In the Pokémon game, Team Rocket and its leader Giovanni are a ruthless organization that believes that strength is power.