"You have a metal arm? That is awesome, dude!"
Spider-Man to Winter Soldier[src]

Winter Soldier's Prosthetic Arm was a cybernetic implant attached to the Winter Soldier's body to be used in place of his missing left arm. Extensions of the arm are implanted in the left shoulder, keeping the rest of the body strong enough to support it and giving the Winter Soldier a distinctive gait.



Creation of the Winter Soldier

"Sergeant Barnes... the procedure has already started. You are to be the new fist of HYDRA!"
Arnim Zola to Bucky Barnes[src]
WS hands

HYDRA turns Barnes into the Winter Soldier

Following Bucky Barnes' fall from Arnim Zola's speeding train, he suffered injuries that included the loss of his left arm. The prosthetic arm was only a portion of the reconstruction efforts HYDRA used in turning Barnes into their deadly assassin. The construction of the arm presumably took place in secret HYDRA facilities in the Soviet Union, following World War II. With the communist red star imprinted on the arm, the brainwashed Barnes eventually became known as the Winter Soldier.[1]

Assassination of Howard and Maria Stark

Assassination of the Starks

Winter Soldier beating Howard Stark to death

On December 16, 1991, HYDRA ordered the Winter Soldier to steal a case of the Super Soldier Serum and assassinate its owners, Howard and Maria Stark. During his mission, he used the strength of his bionic arm to punch Howard Stark to death, and then staged his body to look like he died from the force of a car crash.[1]

Training the Winter Soldiers


Winter Soldier gets overpowered by Josef

After his assassination mission, he began sparring with the newly enhanced Winter Soldiers with the Super Soldier Serum obtained from his mission. The Winter Soldier fought one of the Winter Soldiers, Josef, in a training exercise. However, despite his bionic arm, Josef managed to overpower and defeat the Winter Soldier. Suddenly, the Winter Soldiers rebelled against their handlers, and he used his prosthetic arm to protect and escort Colonel Vasily Karpov to safety.[1]

HYDRA Uprising

Attack on Nick Fury


Winter Soldier fails to execute Nick Fury

As Nick Fury had seemingly successfully evaded his would-be HYDRA assassins in his SUV, the Winter Soldier appeared on the road and used a Disc Grenade to crash his SUV. As the Winter Soldier approached, he used his bionic arm to rip off the door of the armored S.H.I.E.L.D. SUV, but Fury had escaped by digging into the ground and escaping to Steve Rogers' apartment.[1]

Winter Soldier

Winter Soldier stops Captain America's shield.

Later that night, the Winter Soldier tracked Fury down at Rogers' apartment and shot him through the chest, leading Rogers to chase him across rooftops. Rogers caught up to him on a rooftop and threw his shield at him. However, Barnes caught his shield with his bionic arm and threw it back at him, allowing Barnes to escape.[1]

Battle of Washington, D.C.


Winter Soldier lands on the road after killing Jasper Sitwell

"He's fast. Strong. Had a metal arm."
Steve Rogers[src]

During his fight with Captain America in Washington, D.C. following his attempt to kill Nick Fury, the Winter Soldier's arm was damaged by Captain America's Shield. The arm, which is at least partially mechanical, was repaired later by HYDRA doctors in the Ideal Federal Savings Bank, a HYDRA facility run by Alexander Pierce.[1]

Battle at the Triskelion


Winter Soldier shooting down the Quinjets

During the Battle in Washington, D.C., the Winter Soldier had killed several S.H.I.E.L.D. personnel at the Triskelion and used his prosthetic arm as a shield to block gunfire. He later used his arm to punch a hole through the window of a Quinjet and steal it to fly towards Captain America and Falcon.

WS aims

Winter Soldier rips the Falcon out of the air

On the third Insight Helicarrier, Winter Soldier ambushed the two heroes and used his prosthetic arm to throw Falcon into the air. Later, as Captain America and the Winter Soldier fought each other inside the Helicarrier, Winter Soldier used his bionic arm to block his shield attacks and to punch Captain America. The strength of his arm, in combination with his naturally enhanced strength, was used to force a knife into Captain America's shoulder and to pin his arm.


Winter Soldier shooting at Captain America

As Captain America tried to climb up to install the last chip, Winter Soldier used his robotic arm to mortally shoot Captain America. As the Helicarriers collapsed at the Triskelion, Winter Soldier later used the arm to rescue Captain America from drowning in the Potomac River.[1]

Avengers Civil War

Capture of Winter Soldier


Bucky Barnes blocking various gun shots

After the Bombing of the Vienna International Centre, Bucky Barnes was presumed to be the culprit and the Joint Counter Terrorist Centre prepared an operation to kill him in Bucharest. Captain America fought alongside him to keep him alive. During the breach, Barnes shielded himself with his arm to block gunfire and to throw Captain America against a Joint Counter Terrorist Centre combatant. Whilst trying to escape to the lower levels of the apartment, he leaped from the top floors and grabbed the metal railings with his prosthetic arm to break his fall.

As the chase continues into the underground tunnels, Barnes used his bionic arm to grab a speeding motorcycle and ride it himself. However, he was eventually captured and imprisoned at the Joint Counter Terrorism Centre in Berlin.

The Winter Soldier Escapes


Winter Soldier attempts to shoot Tony Stark

After Helmut Zemo used Barnes' command words to brainwash him in the sub-levels, he incapacitated Sam Wilson and used the strength of his bionic arm to throw Rogers into an elevator shaft. As he made his way upstairs, he fought Black Widow, Sharon Carter, Tony Stark with his Iron Man Gauntlet, and T'Challa, but he successfully fled to the roof where he was about to escape with a helicopter. However, after Rogers helped disable the helicopter, Barnes tried to choke Rogers to death with his robotic arm, but he was knocked unconscious as they fell into the river. Rogers and Wilson eventually took Barnes to an abandoned warehouse, locking his prosthetic arm in a large industrial vice to learn more about the HYDRA Siberian Facility and the Winter Soldiers.[2]

Clash of the Avengers

Captain America Civil War 170

Spider-Man blocks Bucky Barnes' blow

Barnes used his prosthetic arm to defend himself from Tony Stark's allies at the Leipzig-Halle Airport. Intercepted by Spider-Man, Barnes found the strength of his arm matched when an attempt to land a strike was countered by the enhanced youth who casually voiced his awe that Barnes had a metal arm before they were separated by the arrival of Falcon. Later, when the two Avengers factions met in a skirmish, Barnes was engaged by Black Panther, who almost overpowered him due to his use of the vibranium suit, Panther Habit.[2]

Battle at the HYDRA Siberian Facility

The arm was destroyed by Tony Stark's unibeam when Stark was manipulated by Helmut Zemo to attack Rogers and Barnes. The arm was not replaced even after the battle, and the remaining shoulder of the arm was removed before Barnes chose to be frozen until a cure for his brainwashing can be found.[2]

Vibranium Arm

Black Panther's Gift

AIW Winter Soldier Arm (Wakandan)

Bucky Barnes being given the Vibranium arm

"How much for the gun?"
"Not for sale."
"Okay, how much for the arm? Oh, I'll get that arm."
Rocket Raccoon and Winter Soldier[src]

For two years, Bucky Barnes lived in Wakanda without a prosthetic arm. In 2018, when T'Challa was alarmed by the Avengers that Thanos' army was coming to attack the country, he gave Barnes a vibranium prosthetic arm designed by Shuri.


Rocket Raccoon attempting to buy the arm

During the Battle of Wakanda, Barnes used the cybernetic arm to wield his rifle with great efficiency, defeating many Outriders, when his rifle got knocked out of his arm, he tried to use his cybernetic arm to pierce an outrider with a knife but failed. He later lifted Rocket Raccoon with his prosthetic arm and they worked together to kill as many Outriders as possible. Rocket asked Barnes for his gun's price, but he replied it was not for sale. Rocket then asked for his prosthetic arm's price, so Barnes left without answering, although Rocket was sure he would get it.

Later, at the end of the battle, Thanos arrived and effortlessly defeated Barnes after Barnes attempted to shoot him. After the Titan assembled the Infinity Stones and wiped out half the universe. Barnes was the first of the victims, as he was disintegrated along with his prosthetic arm.[3]


Both Winter Soldier and his prosthetic arm were restored when Bruce Banner reversed the effects of the Snap with the Nano Gauntlet.[4]


The bionic arm gives him strength slightly superior to that of Captain America, and comparable to that of Iron Man. The Winter Soldier was able to rip open a S.H.I.E.L.D. armor SUV, rip apart Sam Wilson's EXO-7 Falcon, and smash concrete by punching it. With his bionic arm supporting his already-enhanced natural strength, the Winter Soldier was able to overpower Captain America in a fight.[1]

The limits of the bionic arm's strength were realized during the Avengers Civil War. While the arm was stronger than a natural one, it was not as flexible. This was seen when the Winter Soldier found himself matched by Spider-Man, an enhanced youth, who was able to counter his blow due to his superhuman strength and bend back the appendage with ease. The arm was later almost overpowered by the Black Panther whose own enhanced strength combined with his vibranium suit, the Panther Habit, allowed him to push back the force of the bionic arm while exploiting its limited mobility. The arm proved inferior to the gauntlets of the Mark XLVI as Stark was easily able to counter it before disintegrating the limb with his unibeam.[2]

Despite being equipped with a new Vibranium arm, its capabilities were shown to be relatively similar to his original bionic arm with the added benefits of being vibration absorbent and nigh-indestructible.


Appearances for Winter Soldier's Prosthetic Arm

In chronological order:


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