One great fanfic is 'The Long Road Home'. It delves deep into the relationship between Captain America and Bucky Barnes. It shows how Steve Rogers is determined to save Bucky from the clutches of Hydra. The story is full of action and emotional moments.
In certain comic arcs, Bucky Barnes takes on the mantle of Captain America. This occurs after specific events and developments that shape the storyline.
Well, it depends on the specific comic series and story arcs. In some cases, Bucky Barnes does become Captain America after certain events and circumstances unfold.
Character development is key. Bucky's journey from the Winter Soldier back to his true self needs to be believable. And Steve's unwavering loyalty should be portrayed in a way that feels real. Also, a good fanfic might include other characters from the Marvel universe in a way that enhances the story of Steve and Bucky.
The story of 'Captain America: Winter Soldier' is complex. It mainly revolves around Steve Rogers adjusting to the modern world. Hydra has secretly infiltrated S.H.I.E.L.D. The Winter Soldier, Bucky Barnes, who was Steve's old friend, has been brainwashed by Hydra to be a deadly assassin. Steve discovers the truth about S.H.I.E.L.D. and Hydra's plot. He teams up with Natasha Romanoff to fight against this conspiracy and also tries to save his friend Bucky from the control of Hydra.
The Winter Soldier doesn't become Captain America in the regular comic storylines. It's Steve Rogers who holds that position. But comics are full of surprises and alternate universes, so there could be special instances where this happens in some less common or alternate versions.
A good character portrayal. If it can capture the essence of Steve's leadership and unwavering moral compass, and Bucky's complex past and his struggle to come to terms with it. For example, a fanfic that shows Bucky's PTSD in a realistic way would be great.