Bucky is in a cell after steve saved him from hydra, but bucky ain't in the cell alone. His partner, Jax is in the cell with him. They were both at hydra together, partners at hydra and lovers.

Bucky aka, winter soldier and Jax aka, undead assassin. Strongest weapons of hydra and longest at hydra. Bucky has a metal arm, Jax can't be killed. Bucky lover her and Jax loves him.

They are both brainwashed tight now, coldly looking at steve as he tries to get them back.