"I can sense everything better than most and react to attacks almost before they happen. Combine that with my training and secret ability to turn Grimm to stone, or blind them, or vaporize them, and that's how you become the Grimm Reaper!"
The user can combine great power with impressive technical skill to perform incredible feats, allowing them to fight with great efficiency against comparable opponents, and perhaps even keep pace with opponents beyond their strength level, acting as a near-unstoppable force.
This is not simply Combat Merging; the user can combine their powers with other skills/talents.
Eren Yeager (Attack on Titan) combines his Titan Shifter powers with boxing techniques...
...to deadly effect.
Ausar (Black Sands Entertainment)
Having been trained as a mercenary since age six, Guts (Berserk) possesses incredible physical capabilities, able to easily wield a massive 400-lb sword with one arm, move faster than the eye can see, and survive wounds that would be fatal to a normal man...
...which he combines with his swordsmanship and tactical abilities.
Genryūsai Shigekuni Yamamoto (Bleach) not only mastered all known forms of Shinigami combat during his more than 2,000-year lifespan, but also was nigh-unrivaled when it came to his sheer power.
Sōsuke Aizen (Bleach) is a Shinigami prodigy of such caliber his raw power not only rivaled that of Yamamoto, but his strategic and scientifict intellect, skill in swordsmanship, speed, and magical powers were unnaturally impressive.
As one of the oldest Shinigami there is, Ichibē Hyōsube (Bleach) had intelligence, power, & skill that equaled or even surpassed that of Yamamoto.
Coyote Starrk (Bleach) was an Arrancar so unnaturally strong that lesser Hollows died from his mere presence; he was also such a prodigy in combat he could fight evenly with some of the most senior Shinigami.
Angels such as Whis and Vados (Dragon Ball series) are not only vastly stronger than Destroyer Gods, but they also have greater magical versatility than Supreme Kais, have mastered Ultra Instinct, and are highly intelligent.
As the second Greed, Ling Yao (Fullmetal Alchemist) combines Greed's Ultimate Shield with his own martial prowess to hold his own against King Bradley.
Kaidou "King of the Beasts" (One Piece) is physically extremely strong and durable, a veteran and highly skilled combatant, master of all forms of Haki, and possesses one of the most powerful Devil Fruit powers in the world.
Befitting being Kaidou's child, Yamato (One Piece) is physically extremely strong and durable, a prodigy fighter, skilled in all forms of Haki, and possesses one of the rarest Devil Fruit powers in the world.
Ash's Charizard (Pokémon) has extensively honed its power and technique by training at the Charicific Valley, allowing it to hold its own against Legendary Pokemon like Articuno.
Cartoons[]
In addition to his mastery of the Omnitrix, Ben Tennyson (Ben 10 series) is trained in savate and karate, allowing him to hold his own in combat with or without it his watch.
With vast physical attributes and centuries of combat experience to back it up, the Guardian (Samurai Jack)...
...was the only being to decisively and effortlessly defeat Jack in a fight...
...Unfortunately for him, it wasn't enough to survive Aku due to the Guardian lacking the one weapon that could harm the incarnation of evil.
Comics[]
Contrary to common belief, Kal-El/Superman (DC Comics) is an extremely skilled martial artist who is well versed in his homeworld's supernatural martial arts.
Teth Adam/Black Adam (DC Comics) along with having immense raw power, he's as skilled a martial artist as Batman.
Between his Super Soldier enhancements and military training, Deathstroke (DC Comics) is such a deadly opponent that even Batman, one of the greatest martial artists in the DC Universe, can only fight him to a stalemate at best.
Spider-Man (Marvel Comics) combines his spider powers with a fighting style that directly compliments them, allowing him to defeat such beings as the Power Cosmic-wielding Firelord in hand-to-hand combat...
...which has only increased once he learned kung fu from Shang-Chi.
Though he generally relies on his sheer strength, at various points the Hulk (Marvel Comics) possesses or develops advanced combat skills to back it up.
Between his mutant powers and decades of experience as a soldier, Wolverine (Marvel Comics) is able to hold his own against beings as powerful as the Hulk...
...and the Juggernaut.
Daniel Rand/Iron Fist (Marvel Comics) is the 2nd best fighter in the Marvel universe as well as having enough raw power to harm Hulks & the Phoenix Force.
Diana Prince/Wonder Woman (DC Comics) is a very skilled warrior as well as having enough raw power to combat several of DC's powerhouses like Superman & Darkseid.
Thor Odinson (Marvel Comics) is one of the most powerful heroes in the multiverse & has centuries of combat experience making him one of the most skilled.
Hercules (Marvel Comics) is one of the most physically powerful heroes in Marvel & has being Olympus's best warrior being able to fight on equal terms with Thor. He also created the martial art of Pankration.
Sunspot (Marvel Comics) is an Alpha-Level Mutant being supernaturally physically powerful & is also a very skilled martial artist.
Kain Parker/The Scarlet Spider (Marvel Comics) is physically powerful & more ruthless than Spider-Man & has displayed immense skill in combat.
Live Television/Movies[]
Spike (Buffy the Vampire Slayer/Angel) combines his vampire powers with over a century of combat experience, allowing him to kill two Slayers and hold his own against the godlike power of Illyria.
On top of her powers as the Slayer, Buffy Summers (Buffy the Vampire Slayer) has extensively trained to hone her combat skill...
...to the extent that she was able to take on an MMA fighter twice her size while stripped of her powers and beat him unconscious.
Willow Rosenberg (Buffy the Vampire Slayer) combines her computer skills with her Magic aptitude for even faster hacking.
Alice's (Resident Evil) pre-existing combat experience and T-virus enhancement combine to allow her to match and defeat Nemesis in close quarters combat.
Between his Ranger powers and natural karate skills, Tommy Oliver (Power Rangers) is an equal match for the entire original Mighty Morphin team...
...and can match and defeat monsters like Rita's Putty Patrollers even without his powers.
The T-3000 (Terminator Genisys) combines John Connor's military training with mastery of its machine phase matter powers to overwhelm the T-800.
Viktor (Underworld) is a Vampire Elder with centuries of combat experience, possessing the raw strength to overpower and effortlessly kill a fully transformed Lycan with his bare hands...
...and the fighting skill to gain the upper hand against stronger entities like the Hybrid Michael Corvin.
Video Games[]
Dante and Vergil (Devil May Cry) wield both vast demonic power from their heritage and great skill in martial arts and weapons handling, allowing them to fight and defeat the legions of the demon world and each other.
SPARTAN-II supersoldiers (Halo) are both trained from childhood as the best soldiers humans can be, but also bio-augmented to be superhumanly strong, fast, and durable.
Like most Jiralhanae, Atriox (Halo) has physical strength rivaling that of a Spartan; unlike most Jiralhanae, Atriox is also extremely intelligent, cunning, and a very capable warrior, even easily defeating 3 Spartans at once.
Jak (Jak and Daxter) combines his Eco channeling with his vehicle skills for increased speed.
Pharaoh Man (Ruby-Spears' Mega Man) is an expert with his Special Weapon, the Pharaoh Shot...
...and even with his weapon stolen, retains enough strength and fighting skill to effectively fight back against Mega Man.
Raiden (Metal Gear series) combining his cybernetic augmentations with swordsmanship specialty to deadly effect.
Aside from his supernatural physical strength and enhanced speed, Knuckles the Echidna (Sonic the Hedgehog) is also and very experienced fighter and martial artist, having trained from birth in all forms of combat.
On top of his Chaos powers, Shadow the Hedgehog (Sonic the Hedgehog) is an expert in weapons handling.
Albert Wesker (Resident Evil) combines his virus-derived superhuman abilities with martial arts and gun skills.