Sydney is the lesser known daughter of Elaine and John Grey. Whist her sister, Jean, goes to Professor Xavier's School for Gifted Youngsters, Sydney sought out a different path. A life saving the world with the Avengers-where she met her husband. Though life isn't always that glamorous in the Avengers' lives-especially now, with half of the population dusted from Thanos-including her husband. Sydney has been coping in the only way she knew how: murder. That is, until Steve Rogers shows up on her doorstep. (Endgame) (I only own Sydney Grey and my ideas)