Kitai Raige (After Earth) becoming completely free of fear via Ghosting, a technique that completely erases what fear they possess.
Will Scarlet/The Knave of Hearts (Once Upon a Time in Wonderland) was immune to the Jabberwocky's power due to the lack of fear he felt without his heart.
After Jafar (Once Upon a Time in Wonderland) succeeded in ascending his magic, he was free of all fear, being able to subdue the Jabberwocky because of it.
Horror The Ancient (Grim Adventures of Billy and Mandy) channeled all his fear into his left hand and then cut it off, leaving him forever brave and without fear of any kind.
While under hypnosis, Snotlout put ideas into his head that he was a fearless, legendary Viking warrior. Because of this, Fishlegs Ingerman (Dreamworks Dragons) becomes "Thor Bonecrusher", a fearless and capable warrior. It is not until Meatlug risked her life did he snap back to his old self.
Scarecrow's Fear-Depressant Gas (DC Animated Universe) is shown to have the opposite effect of his usual compounds - but with even more devastating effects!
The Red Sweater of Courage (Dave the Barbarian) is able to grant the wearer limitless courage at the cost of their common sense.
Juleka Couffaine (Miraculous: Tales of Ladybug & Cat Noir) reacted without any sign of fear to Horrificator, weakening the monster as a result.
Takemikazuchi (Valkyrie Crusade) is fearless.
Bunga (The Lion Guard)
Despite facing a being with the ability to transform into a person's worse fear, no matter who he turned into, it did not affect Bruce Banner/The Hulk (Marvel Comics), making him fearless.
Even if he puts his life at risk, Bruno Bucciarati (JoJo's Bizarre Adventure Part V/5: Golden Wind/Vento Aureo) is unflinchingly fearless.
Shi Ryou (Kingdom)
Jinbei (One Piece)
The Grit-Shaka (Trollhunters) is a Gumm-Gumm totem that robs the wearer of all fear.
Space Marines (Warhammer 40k) are completely fearless and are capable of facing enemies that would cause normal men to soil their pants with but a glance.
Necrons (Warhammer 40k) are completely fearless, ever since their flesh was seared away in the furnaces of biotransference and replaced by living metal and a cold, soulless purpose.