Thabian Polotsk from Gold Digger IS this trope: a super-strong werewolf gentle giant with two young children he would (and almost did) die for.
Adversely, Brendan, another werewolf, disdains his children to the point of homicidal hatred.
Marv from Sin City is like this to the girls at Kadie's Bar, especially Nancy. Granted, it's due to his enormous chivalry, but given his age and the ages of most of the dancers, I say it counts. He mentions one moment when a frat boy roughed up Nancy, which angers him as he doesn't believe in hitting women, and he "straightened him out but good," mentioning that he maybe went a little too far (implying that the other guy didn't survive). There's also the short yarn "Silent Night," where Marv hears about a mother asking after her missing daughter, then hunts down and kills her abductors (who had been planning to sell the poor girl for sex) and cradles the terrified child in his arms in a rare tender moment before taking her home.
The corrupt police commissioner Liebowitz turns against the Wallenquist crime organization in "Hell and Back" after his Dragon The Colonel orders the assassin Mariah to break Liebowitz's son's arm to remind Liebowitz of the organization's power over him. Liebowitz responds by organizing a police raid on the organization's human trafficking operations. Then he personally blows The Colonel's brains out and orders his officers to "make a missing person out of the fucker."
In Violine, her father Francois certainly qualifies as this, traveling Africa for years in search of her mother.
Rick Grimes in The Walking Dead will do almost anything to protect his son Carl.
When a couple of bandits attack them on the highway, one of them attempts to rape Carl while another restrains Rick. Rick RIPS THE BANDIT'S THROAT OUT WITH HIS TEETH and proceeds to mercilessly stab the other to death.
Praxton, Kenton's father, in White Sand. Not only is he the Lord Mastrell of the only sorcerous order on the planet, he also proves himself to be a veritable One-Man Army when Kerztians attack, ending the battle single-handedly.
