Josef

"He said he wanted to see an empire fall." "With these guys, he could do it. They speak 30 languages, can hide in plain sight. Infiltrate, assassinate, destabilize. They can take a whole country down in one night, and you'd never see them coming."

- Steve Rogers and Bucky Barnes

Josef was one of the Winter Soldiers enhanced by the Super Soldier Serum. He was killed by Helmut Zemo while in cryostasis hibernation.

Biography
According to Bucky Barnes, the original Winter Soldier, Josef was part of an elite group of five assassins under HYDRA who possessed the highest kill count out of all the assets HYDRA possessed even before being enhanced by the Super Soldier Serum. He and the others were injected with the Super Soldier Serum to replicate the Winter Soldier himself. Bucky was tasked to train the Winter Soldiers to see if they could overpower him, meaning the experiments were a success. To the delight of HYDRA, it was, with Josef successfully overpowering Bucky.

However, Josef and the others soon lost control and started a riot, resulting in all of them being put under deep sleep in Cryostasis Chambers. They were eventually found in 2016, by Sokovian Colonel Helmut Zemo, whom Captain America and Iron Man believed was looking for them to turn them into weapons for his own agenda. To the Avengers' surprise, Zemo had actually killed Josef and the rest by shooting them each in the head.

Abilities
According to the original Winter Soldier, Josef could speak thirty languages and blend in with any population without being detected and, along with the other four Winter Soldiers, could destabilize an entire country overnight. Even before being enhanced by the Super Soldier Serum, Josef and the other four possessed the highest kill count of all of HYDRA history. He was also an extremely skilled hand-to-hand combatant, enough to hold his own against, and eventually overpower Bucky in a sparring match.

Allies

 * HYDRA
 * Vasily Karpov †
 * Winter Soldier
 * Winter Soldiers †

Enemies

 * Helmut Zemo - Killer