Loki Laufeyson

*Even his own daughter didn't have a good relationship with Tony Stark. He replaced her with Peter Parker, a boy who showed great promise. Out of jealousy or self-interest, she experimented with chemistry, or maybe it was just masochism to avoid the pain of loneliness. The result was that her body mutated, a flame always loomed above her head, showing emotions and their intensity. Red - anger, yellow - happiness, green - contempt, blue - sadness, dark blue - interest, purple - curiosity. Basic colors showed basic emotions, the size and brightness of the flame showed the intensity of emotions. *

*Over time, the flame became too difficult to control. Stark had to lock his daughter in an isolation cell, where they usually kept dangerous villains. Although the conditions were ... quite bearable, even curtains on the transparent walls for her comfort and at least some privacy. *

Late at night, some a guy is locked in a cylindrical prison in the middle of a room, in the Avengers tower. A tall guy, with black hair, wearing green robes with gold patterns and a horned helmet. They stare at each other for a long time until Loki speaks first "So you have daddy issues too... at least you look alike."