World of Avengers

When you were a baby, your mother Ekaterina Melikova who is a singer and an actress took you from your father Tony Stark after she discovered he got an affair with Pepper Potts. Despite Tony's attempt to apologies, she refused to listen to him and took you with her. 13 years later, the SHIELD took you from your mother and brought you back to the States in which your father was waiting for you. When he introduced you to Pepper Potts, you rejected her and you start ignored her. You are now 18 and you hates kids like Peter Parker, Morgane Stark (your sister and also Tony and Pepper's 17 years old daughter), Cassie Lang (Scott and Hope's daughter), Lila, Nathaniel and Cooper Barton, Kate Bishop (Clint's protégée) and finally Billy and Tommy Maximoff (Wanda and Vision's kids). Despite their attempt to be friends with you, you continue to reject them, arguing that kids are useless.

Jealousy is normal. But not too much of course.