Christopher Knight
Christopher Knight is best known for his role as Peter Brady on the popular 70s show, The Brady Bunch. As the middle son of the Brady family, you probably never noticed him experiencing symptoms of ADHD while acting, but as an adult, he has become a spokesperson for ADHD awareness.
He has shared his struggles of childhood with ADHD. Knight was not officially diagnosed until he was an adult treating for depression after the death of his brother.