Look at the size of that whammer!Symmetry has often been considered a crucial element of beauty and form. So when a character designer wants to go for something bizarre, distorted, gritty or badass, they will mess with the symmetry and one of the most common forms of Fashionable Asymmetry is to make one arm much bigger than the other. It will still be an arm with a hand and digits but it will dominate the upper body and the size may be explained by some large glove-like piece of equipment or weapon. The creators may also decide upon whether or not to have the arm's considerable weight imbalance be acknowledged with the character walking with a slight shuffle or lean. Contrast with Red Right Hand, which, funnily enough, doesn't have to be a hand and is any mutation or defect used to denote an evil side.
— An American soldier, Hellboy
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Anime and Manga
- Bleach: Chad's spirit powers manifest as a huge armoured right arm. This gets evened out with his left arm after some training with Kisuke shortly before the Hueco Mundo arc, though his second arm looks completely different, and both of them are much larger than the rest of his limbs, so it's still an example of this trope.
- Kill la Kill uses this trope with Ryuko's berserker form, which is pretty asymmetrical all-over, to be fair, but features a left arm approximately the same size as its body.◊
- Neinhalt Seiger of Samurai Shodown. His weapon is a giant gauntlet with a glowing hand.
- In Code Geass, the Guren's right arm is larger and more skeletal than its left, and a different colour to the rest of its body. It can also bombard grabbed enemies with radiation until they explode.
- In this case, it's a Right Hand of Doom because the pilot is The Southpaw: the design of the radiation arm renders it unsuitable for any task except grabbing opponents and frying them, so it was installed on the pilot's non-dominant side.
- The upgraded arm is much the same, but with a greatly increased level of functionality and damage potenial... Making it the right hand of Doomy Doom Dom. And that's not counting the SEITEN's arm, which is the same, but with around a kilometre greater range, thanks to rocket boosts.
- The titular weapon of Busou Renkin's Homunculus Kinjou is a gauntlet on the right arm. One of its abilities is to absorb particles from the air to grow to enormous sizes.
- In Tiger & Bunny, Wild Tiger's Good Luck Mode powerup is a huge right hand.
- Hell Teacher Nube's left hand is actually a prosthetic made from a sealed demon. When he unseals it to fight off the Monster of the Week, it turns into a monstrous claw.
- Mobile Suit Gundam Unicorn OAV has a possible inverted example in the Banshee, which has a massive 4-digit claw dominating its left arm.
- In Xam'd: Lost Memories, the titular shapeshifters have this as their most common distinguishing feature.
- Koil Krasnov from the Ghost in the Shell manga.
- In AKIRA, Tetsuo gains a cybernetic left arm after losing his natural one. As his psychic powers consume him, the arm grows back and transforms into something alien-looking.
- From the twelfth One Piece movie, the Big Bad Z has a huge mechanical right arm.
- Sir Crocodile plays with this - his left hand is replaced with a huge golden hook, hiding a poisonous one underneath. However, it's his right, normal-looking hand that is the most dangerous - he can draw the humidity from everything he touches, including people, leaving them mummified.
- One of the Manganac mobile suits in Mobile Suit Gundam Wing has a giant claw arm made of the same indestructible miracle metal as the Gundams.
- Magical Girl Lyrical Nanoha ViVid has Corona's Meist Arm move, where she uses her earth control powers to equip one of her arms with a Golem's fist that's bigger than her entire body.
- The titular character of Finding Nemo has one of his fins being much smaller than the other. The reason why he recieved this deformity is because at the very beginning of the film, his eggshell was cracked during the battle between his father Marlin and a barracuda.
- The "Delta-6 Accelerator suit"◊ powered armour in G.I. Joe: The Rise of Cobra features a miniaturized, laser-assisted Gatling gun attached to the right arm.
- Near the end of The League of Extraordinary Gentlemen an enemy soldier drinks an overdose of Dr. Jekyll's potion and turns into a giant monster: one of his oddities is having one arm much larger than the other.
- John Silver in Disney's Treasure Planet
- The Mote in God's Eye features the Moties, an alien race with two small, dextrous arms on one side and a heavy, powerful arm on the other.
- In A Song of Ice and Fire Victarion gets something that probably qualifies here. While his left arm isn't any bigger, it is completely functional and probably super strong, but looks like it's been thoroughly barbecued.
- There are two candidates in Tower of God for the Devil of the Right Hand. Guess what their arms transform into.
- Fiddler crabs.
- British freight trains did not have continuous brakes until after the demise of steam, roughly speaking. Braking was effected by means of steam brakes on the locomotive and hand brakes on the locomotive's tender and the brake van. Certain classes of locomotive were notorious for the operation of the tender brakes requiring much strenuous winding of a small hand crank to little effect. It was the fireman's duty to wind this crank, and it was said that firemen who were regularly assigned to those classes of locomotive could readily be distinguished by having one arm bigger than the other.
- Warhammer 40,000
- Space Marines named the Power Fist trope for a reason: they're basically lightsabres in punching form when it comes to enemy armour. Since they also need to wield guns, power fists are usually on their left arms instead.
- Graevus of the Soul Drinkers. His right hand isn't clad in a power fist... because it's grown to about the same size as one. He has been known to use it to snap spines.
- Commissar Yarrick has an Ork Powah Klaw almost as big as the rest of him in place of his right arm, which is strange for two reasons: A) Using xeno technology is usually punished by death in the Imperium and B) most Orky technology only works because the Ork's gestalt psychic powers make it work the way they believe it should. This, along with his laser eye (which was the Orks' idea), raises some interesting questions about Yarrick's relationship with his preferred enemy.
- Eberron has the Battlefist, a magic item attached to Warforged and Renegade Mastermakers/Self-Forged.
- Exalted: An iconic Infernal (who is basically a living mummy) has a massive lobster pincer for left hand. It's actually a demon melded into his body. The writeup for the artifact notes that it can shift into four different forms, one of which is more-or-less normal-looking, but the "honking big crab claw" look is most commonly seen.
- Many BIONICLE figures have oversized right arms or hands, including the six Toa Hordika (in The Movie, these are even shown fused together with their weapons) and six original Piraka sets, Mantax from the Barraki series, and Hewkii from the Toa Mahri line (who also has a gatling gun built into his forearm). From the bigger toys, Sidorak has an enormous right hand with gripping claws, and Makuta Icarax has a rotating blade for a right hand. Lefties include Lewa and Tahu from the original Toa Mata line, and Matoro from the Toa Mahri.
- In Mixels, Krader's right arm is a super-huge three-digit robotic one, in contrast to his left arm's tiny one with a small pincer hand. It gives him his tunneling abilities by acting like a drill and is strong enough to break through rocks.
- Bomberman: Act Zero, the Darker and Edgier reimaging of Bomberman, had an oversized claw glove on his lefty.
- The Bionic Commando moved into 3D with his arm chain shot going from medium sized to overwhelming tractor piece on his left side that really shouldn't allow him to stand.
- The Pokémon Kingler, being based on the fiddler crab, has one gigantic left claw.
- Similarly, the new Pokemon Clauncher has a larger right claw than left. This is Justified, as it is based off of the Pistol Shrimp, which is known for its large claw. Its evolution Clawitzer, however, takes this trope Up to Eleven.
- Ragna the Bloodedge usually has a normal-looking if artificial right arm. But it transforms into a huge, black, demonic claw for his Devoured by Darkness special and his Astral Heat.
- In Left 4 Dead 2, the Charger special infected has a ludicrously large right arm but a stump for its left arm.
- Similar to Kingler, the crab from Sonic the Hedgehog 2 (Metropolis zone) definitely qualifies.
- Badass Psychos in Borderlands have one huge arm and one atrophied, useless arm. The big arm isn't especially muscular, but it's very long. Krieg the Psycho of Borderlands 2 can temporarily gain these with his Release the Beast skill.
- Krauser's One-Winged Angel form in Resident Evil 4 has a huge arm that can be used as a weapon or shield.
- Barret in Final Fantasy VII has a minigun for a left hand.
- Jecht in Final Fantasy X has a massive deformed claw as the Final Aeon. Then in Dissidia: Final Fantasy, he uses it to throw exploding punches.
- Colonel Bahamut in Contra: Hard Corps uses a mechanical variant of these to fight you.
- Capcom adores this trope. God Hand, Devil May Cry 4, Bionic Commando, Mega Man...
- The League of Legends champion Riven has a relatively large right glove so she can use her BFS.
- Between Metal Gear Solid and Metal Gear Solid 2: Sons of Liberty, Ocelot replaces his lost right hand with Liquid Snake's arm. It does not look natural, and for good reason. However, he replaces it with a cybernetic prosthetic by the time of Metal Gear Solid 4: Guns of the Patriots, revealed towards the end.
- In Darksiders, War has a massive metal prosthetic for his left arm after it was originally chopped off by Death in the past.
- In Kingdom Hearts: Birth by Sleep, when using the Dark Impulse command, Terra's left arm becomes a shadowy claw. Xehanort also uses the same attack when he possesses Terra.
- In the Soul Series games, Siegfried/Nightmare combines this with Red Right Hand, as the corruption caused by Soul Edge manifests as a grotesquely oversized and monstrous right arm.
- In Bloodborne, the Cleric Beast bases most of its attacks around its massive left arm and claw.
- Verses the Persian (a javelin thrower) in The Twelve Tasks of Asterix.
- ThunderCats (1985) villain Hammerhand.
- Big Left Hand Guy, a lesser villain in WordGirl.
- Transformers designs sometimes fall into this. For instance, in Transformers Cybertron, Leobreaker is capable of combining with Optimus Prime in the form of an oversized right arm. In the second live-action movie, Megatron gets an upgraded form that includes a massive cannon on his right arm (and a slightly undersized left arm for emphasis).
- Big Bad Van Kleiss' gauntlet in Generator Rex.
- In Regular Show, The Grim Reaper has an incredibly muscular right arm in contrast to his scrawny build.
- Masters of the Universe, being, well, Masters of the Universe, has at least four characters who fit this description — and, in every case, it's the right hand/arm that's the larger one. The obvious example is Fisto, who depending on the continuity either wears a huge glove, has a mechanical prosthetic hand, or has a naturally enormous right arm. The evil crustacean warrior Clawful has a massive right claw much larger than his left, inspired by the above-mentioned fiddler crab; this is exaggerated in the 2002 cartoon. Then there's the 2002 incarnation of Trap-Jaw, whose mechanical arm is much larger and longer than his natural one, and Fisto's Evil Counterpart Jitsu.
- Qilby the Traitor's wakfu arm (technically it's his left) in Wakfu. It starts out about the same size as his normal right arm, but it can get a lot bigger in the blink of an eye.