The Master (Buffy the Vampire Slayer), due to his advanced age and mental discipline, can endure being burned by crucifixes without feeling pain.
Riddick (The Chronicles of Riddick) has an abnormally high pain threshold to the point where he can dislocate his own limbs with only minor discomfort.
Due to the hellish training she endured at the hands of her father, Cassandra Cain (DC Comics) possesses an incredible tolerance for pain, able to take bullet wounds without even flinching.
Due to his low regard for his own life, Gintoki Sakata (Gintama) can completely ignore injuries and pain to continue fighting viciously.
As a hanyo, Inuyasha (Inuyasha) has an incredible pain tolerance, showing nothing more than mild irritation when Sango impales his arm with a sword.
Due to his Proof of Training skill, Ain von Ishtalica (Magical Gems Gourmet) possesses enhanced pain resistance.
Wolverine (Marvel Comics) has been shot with bullets,...
...arrows,...
... and stabbed repeatedly over the course of 100 years with every kind of weapon known to man.
Spider-Man 2099 (Marvel Comics) possesses incredible pain resistance, once suffering a punctured lung, broken ribs, and major abrasions from a fall off a building, and effortlessly walking to the hospital.
Monkey D. Luffy (One Piece) has demonstrated an impressive tolerance towards unimaginable levels of pain, like when he punched through Krieg's Needle Cloak without flinching...
...withstood Arlong biting and almost ripping off his arm...
...and took on Sanji's Diable Jambe enhanced kicks without hesitation.
Roronoa Zoro (One Piece) possesses incredible endurance to pain, able to withstand being stabbed in the chest, being crushed underneath a building, and even taking on all of Monkey D. Luffy's pain and fatigue.
Albert Wesker (Resident Evil) has handled numerous attacks and explosions...
... getting stabbed in the forearm...
... holding a fired rocket in his hands...
... and having said rocket blow up and is only staggered.
Kureo Mado (Tokyo Ghoul) has incredible pain tolerance, showing only a moment of surprise when Hinami severed his right hand.
Raven Beak (Metroid Dread) possesses incredible pain tolerance, casually tearing off his own wing with his bare hands.
Finn (Adventure Time) has been shown to have an abnormally high resistance to pain and survive multiple situations that would kill a normal human.