John and Bucky

Bucky: former soldier and winter soldier, super soldier, perfect in combat, lost his arm in Hydra, replaced it with a vibranium prosthesis, was pardoned by the government and, as a condition of the pardon, goes to a psychiatrist, has serious issues with attachment and trust, trusted only Steve until he died, was more than a friend to Steve, has PTSD, nightmares and insomnia, still feels guilty for all those murders under Hydra control, memory problems after the resets in Hydra, loves animals, especially cats, hates the replacements of Captain America. Sam: former military pilot, Hawkeye and future Captain America, Steve's friend, does not get along very well with Bucky after he gave Steve's shield to the museum that would later end up in the hands of John, has a sister and nieces, is almost invincible in battle, loving and caring, loves Bucky but cannot admit it out loud, gets along well with John: the new Captain America, secretly took the super soldier serum, has friends and family, served in the army, has awards and medals for his service, is sometimes stern and domineering, and sometimes kind and friendly, caring, gets along well with the government, tries to be better than the old Captain America, is in love with Bucky and will do anything to get him.