Christina Robinson Stark aka the adopted Daughter of Tony Stark and also her godfather. Her real father, Jesse Robinson was Tony's best friend and business partner before Christina was born. He was disgusted to find out that his daughter was born with 'gifts' thus deciding to sell her to the organisation, HYDRA for $10 million so they could conduct experiments on her. After 10 years of experiments, she had gain new powers of elements which helped her escape with the help of her mentor at the time. Eventually, Tony found her and decided to adopt her due to her father disowning her still. He made sure that Jesse had no more part in his business with Stark Industries as well as making sure he had no contact with Christina. She was there when Tony became Iron Man, when she became an Avenger at age 17 and now she was going to have to choose who matter most to her: Tony Stark, her adoptive father or Steve Rogers, the super soldier she admired so much. StevexOCxBucky story