Black Ops Psionic Amplifier/Psi Amp (System Shock 2)
Ice King (Adventure Time) possesses a natural immunity to the Empress's hypnotic eyes.
Utsuro (Gintama) is the embodiment of emptiness, as the mind-reading Batou stated his mind is the first he could not read.
After fusing with Yubel's spirit, Yuki Judai (Yu-Gi-Oh! GX) can't be deceived by any supernatural effects such us disguises, lies and making him immune to any and all psychic effects etc.
Dark-type Pokémon (Pokémon) like Umbreon are completely immune to Psychic-type attacks.
As a vampire, Angel's (Buffy the Vampire Slayer) mind is similar to his reflection in a mirror, rendering him immune to telepathic probing.
Luna Maximoff (Marvel Comics)
Due to his split personality, Moon Knight (Marvel Comics) is resistant to psychic powers and attacks.
Jessica Jones (Marvel Cinematic Universe) developed a natural immunity to Killgrave's Hypnotic Pathogen.
Due to what he describes as an "elastic consciousness," mind control is rarely effective on Reed Richard/Mister Fantastic (Marvel Comics) and even when it is, it wears off more quickly than on a normal person.
Matt Murdock/Daredevil (Marvel Comics) was trained by Stick to resist telepathy to prevent his mind from being read.
Max Eisenhardt/Magneto (Marvel Comics) has trained himself extensively to resist telepathy, and the effect is enhanced by his helmet.
The Mind Gem (Marvel Comics) grants protection over its user's mind.
James "Logan" Howlett/Wolverine (Marvel Comics)
The darkness in Fanoxean's (The Young Guardians) mind is so great that it renders him immune to all forms of telepathic assault.
Daphne Powell (No Ordinary Family)
JJ Powell (No Ordinary Family) can resist his sister's "Telepathic Push" due to his brain functioning more powerfully.
Solid Snake (Metal Gear) was able to block out Psycho Mantis' mind-reading ability.
Gene's (Metal Gear Solid: Portable Ops) mental shielding is so powerful that not even his psychic henchman, Ursula, can read his mind.
Severus Snape (Harry Potter) an accomplished practitioner of Occlumency.
Lord Voldemort (Harry Potter) is an accomplished practitioner of Occlumency.
Bellatrix Lestrange (Harry Potter) is a practitioner of Occlumency, enough to train her nephew in the art.
Thanks to his strong will, Bruce Wayne/Batman (DC Comics) is resistant to mind control.
Preus's (DC Comics) breastplate both protects him from telepathic penetration and allows him to eavesdrop on telepathic conversations.
Superman (DC Comics) is protected from telepathic penetration by a series of psychic blocks.
Through the Kryptonian martial discipline Torquasm-Vo, Superman (DC Comics) can protect his mind from mental assaults.
Blaire Vherestorm (Stupid Mario Brothers) is able to block Ness' telepathy.
Sir George (Ben 10) is immune to mind control, thanks in part due to his suit of armor.
In his full demon form, Inuyasha's (InuYasha) mind is consumed with nothing but anger and primitive bloodlust, rendering him immune to telepathic probing.
Kalimba of the Tiki Tak Tribe (Donkey Kong Country Returns) fails to hypnotize Donkey Kong.
Because of his sheer willpower, Saitama (One-Punch Man) is unaffected by all types of psychic powers, all of which only make his muscles slightly twitch.
Murtagh (Inheritance Cycle) knows how to generate powerful mental barriers, allowing him to protect his mind from some of Algaësia's best magicians. Only King Galbatorix himself was able to break through his defenses and submit him to his will.
Razputin Aquato (Psychonauts) possesses mental durability so strong a fully-trained psychonaut like Coach Oleander was not able breach his mind to learn his name.
Sisters of Silence (Warhammer 40k) are a group of soulless warriors, which makes them immune to any kinds of physic attacks and influence.
Misaka Mikoto (A Certain Scientific Railgun S) due to her electromagnetic barrier prevents Shokuhou's Mental Out abilities from working.