*on being asked if he enjoys hitting things with Mjolnir* It is an activity of which I am singularly fond.
Vandal Savage is hardly one of these in the contemporary DC Universe; however, Demon Knights, set in medieval times, casts him as a wandering immortal who hasn't quite turned towards world domination but is still plenty happy to get his violence on. Take when the tavern he and his friends are staying is beset by dinosaurs:
Excellent! I haven't eaten one of these in centuries!
Fat Cobra. A gigantic, cheerful, ass-kicking machine, who more than lives up to both halves of his name and has wenches for every occasion. Fat Cobra has also proven himself against every other famous big bawdy guy in his universe, defeating Hercules, Volstagg, and Goom in an otherworldly eating contest.
There's also Dog Brother #1, who once told a tale of slaughter and victory so delightful it brought a smile to the face of Arrogant Kung-Fu Guy Davos the Steel Phoenix.
The Incredible Hercules is usually portrayed this way in the Marvel Universe (especially during his tenure in The Avengers). Notably, on one occasion he beat a supervillain to a pulp, went to a bar, got merrily drunk, and sang a song about how thoroughly he had beaten the bad guy. The bad guy then sued him for use of excessive force, with a video of the song used in evidence. Herc started singing along in the courtroom, and tried to get everyone else to join in. Hercules cheerfully bankrupted himself paying the damages, and then went off and got a job as a construction worker to pay his day-to-day bills. He then won (some of) his riches back in a poker game.
The Incredible Hulk often takes this role when forced on a team; the Joe Fixit incarnation is practically the avatar of this trope.
Calamity Jane is portrayed this way. In her first story, the villain's bodyguard says he can't enter an arm wrestling contest with her because she's a woman, but after hearing her grawlix-ridden response comes to the conclusion she's not actually a woman. (He doesn't stand a chance.)
The album L'Artiste-peintre has Lucky Luke acting as bodyguard for famous Wild West painter Frederic Remington, whom by all account was a real-life example of this trope. He's a Big Eater who can devour 18 turkeys in one go (and asks for dessert). At least, when entering a saloon, he's polite enough to (loudly) asks whether the fight starts before or after the drinking. Oh, and telling him that painting is a woman's activity will inspire a hearty laugh, a mention that his parents always told him so... and a punch in the face.
Luke Cage: Hero for Hire: Luke Cage aka Power Man never avoids a fight and loves to punctuate every punch with a little trash talk.
In the Marvel Apes miniseries, the super-ape called Ape X was the epitome of this trope.
Dare we leave the Main Man out of the list? He might find a new use for that hook of his if we do.
Snowflame, for all of his (The New Guardians) one-issue existence. Boisterous Bruiser-hood is more or less inevitable when you're a supervillain who derives superhuman strength from snorting cocaine.
In the regrettably short-lived Topps revival of Jack Kirby's unused Secret City Saga storyline, this was Bombast's personality. Being very powerful and very histrionic are all there is to him; he's a Hurler, whose arms are like hydraulic catapults that can launch anything with impossible speed and force, and he tends towards loud and grandiose verbiage. How cool is Bombast? When he awakens in modern Chicago, he's scouted as a pitcher for the Cubs and it's remarked he could easily win them a championship singlehandedly.
Another Avengers-specific example (and a female) could be She-Hulk. Her solo series is usually more well-balanced, but when she's in a team environment, her fun-loving brawler side gets all the play.
Sin City: Marv, though he only seems to be chipper when he's perpetrating or planning violence. Mickey Rourke, the actor who plays Marv in the movie, was said to have "lumbered into the room practically taking out the door jamb", according to Frank Miller, and he wrote down the single note: "Met Mickey Rourke. He IS Marv."
The Sandman: Destruction (a.k.a. The Prodigal) of the Endless.
Volstagg the Voluminous, one of the Warriors Three who oft accompany The Mighty Thor on his adventures, sits somewhere between here and Miles Gloriosus, depending on the story and when it was written.
One of those female Bruisers is Plourr Illo from the X-Wing Series comics. She's a pilot, but the Bruiser-ness shows much more clearly when she's on the ground. She's mildly insulting to her wingmates, big and muscular, and loves fighting. At one point a teammate tells her that they're trying to keep a low profile◊, and she says "I'll make you a deal. I won't beat on any of the resident scum unless they hit me first—or they pick on my friends—or I feel like it!" "Fair enough," her teammate says. She's also a princess with a backstory and arc inspired by the myth of Anastasia, but this doesn't damp her down.
A third Avengers-specific example is Hank McCoy, the Beast, who was significantly more of a party animal and bruiser during those days than the mannered, cerebral Gentle Giant he developed into after rejoining the X-Men. Shortly after Wonder Man returned to life, Hank went to visit him and instantly regressed into his Avengers persona. Apparently his friendship with Simon brings out this side of him.
With the exceptions of old and wise Getafix, Giftedly Bad bard Cacophonix, and Guile HeroAstérix, the entire male population of a certain little Gaulish village consists of these. The grand prize has to go to Obelix, who has huge appetites for everything - especially food, drink, and punching Romans. It's telling that when the Romans are subdued, the village inevitably descends into friendly but enormous brawls, typically started by Vitriolic Best Buds Fulliautomatix and Unhygienix have one of their disputes.