Hypnotists

Hypnotists are a specific and special type of brainwasher. Instead of using manipulation, corruption, or possession, these characters will use mind control for complete dominance over their victims.

Reality
In reality, hypnosis is all based on the power of suggestion. A subject cannot ever go under hypnosis against their will. Furthermore, even when in trance, the subject cannot be forced to do or think anything they don't want to or do not agree with. Hypnosis in real-life is NOT mind control.

Fiction
In fiction, hypnosis is a power used by characters to control and in many cases enslave victims, whether the subject is willing or not. The hypnosis can be achieved through technology such as mind control devices or trigger phrases, but it is most commonly achieved through magic or some other supernatural/unknown force. This includes the use of hypnotic eyes, hypnotic trinkets and clothing, and the iconic swinging pendulum.

In most forms of media, villains use hypnosis (though many heroes also use it). Villains typically use hypnosis for one or more of the following reasons:
 * To get the subject over to their side
 * To gain control of the subject's powers and/or skills
 * To remove the subject from being a hindrance in the progression towards a goal
 * To extract information
 * To render the subject helpless to their attacks
 * To ensure the subject does not betray or oppose them
 * To use the subject for perverted or sexual acts

Literature

 * Dracula (Dracula)
 * Pennywise (It)

Films

 * Darth Vader (Star Wars franchise)
 * Vigo (Ghostbusters 2)
 * Kaa (The Jungle Book [1967])
 * Kaa (The Jungle Book [2016])
 * Jafar (Aladdin)
 * Ursula (The Little Mermaid)
 * Muddy Bewilderbeast (How to Train Your Dragon 2)
 * The Garden of Eyes (Kubo and the Two Strings)
 * Evelyn Deavor (The Incredibles 2)

Interne

 * Slender Man
 * Hypno (Creepypasta version)

Comics

 * Darkseid (DC)
 * Mad Mod (DC)
 * Mad Hatter (DC)
 * Ringmaster (Marvel)
 * Zemo (Marvel)

Television

 * Plankton (Spongebob Squarepants)
 * Mojo Jojo (Powerpuff Girls)
 * Abracadaver (Powerpuff Girls)
 * Quackerjack (Darkwing Duck)
 * The Brain (Animaniacs and Pinky and the Brain franchises)
 * Sideshow Bob (The Simpsons)
 * Freakshow (Danny Phantom)

Videogames

 * Alma Wade (F.E.A.R. franchise)
 * Shao Kahn (Mortal Kombat franchise)
 * Mewtwo (Pokémon franchise)

Anime and Manga

 * Baron Kelvin (Black Butler)
 * Kazarina (Bakugan: Gundalian Invaders)
 * Lelouch vi Britannia (Code Geass)

Music

 * Twin Dolls ("Trick and Treat" by Len and Rin Kagamine)
 * Fallen Hana ("ME! ME! ME!" by Teddyloid)

Toys

 * Skales (LEGO Ninjago franchise)
 * Takadox (LEGO BIONICLE franchise)