She Played ‘Karen Arnold’ on The Wonder Years. See Olivia d’Abo Now at 54. June 16, 2023 by Mariska Lee Leave a Comment Olivia Jane d’Abo is an British actress who is best known for her roles in Conan the Destroyer and The Wonder Years. [Read more…] about She Played ‘Karen Arnold’ on The Wonder Years. See Olivia d’Abo Now at 54.