Cordelia Frost

Cordelia Frost (voiced by Emily Blunt) is a fictional mutant character in the Marvel Comics Universe. She the younger sister of Emma and Adrienne Frost, as well as being the youngest of the four Frost siblings. She was regarded by her parents as being the "lost" one in the family, and as such she rebelled by dressing in black, having sullen, sulky moods and being argumentative.