Bucky is married to Y/N Stark, Tony Stark's aunt. She is also known as 'Ash', because of her fire and explosion powers. She was married to Bucky back in the 40s, both was at Hydra but she never got out

No one knew she was still alive, expect for tony. Who saved her and hides her in the compound, but Bucky finds her in the lab

She's working on tonys Ironman suit, dancing along with music as he walks in and very shocked to see her