Angel Theory is an American actress, known for playing Kelly on the series The Walking Dead. She is also a dancer and choreographer. Theory was born in Far Rockaway, Queens, New York. Her mother is Anna Simpson. Theory trained as a dancer in multiple styles of dance at the Broadway Dance Center, EXPG studios and Peridance Studios. She performed in the music videos for Wish You Were Mine by Phillip George and Stranger To Love by Charles Perry. After a car crash, she began experiencing hearing l ...