Zachary Thomas "Zac" Moncrief is a producer and director of animated television programs who directed 58 episodes for Phineas and Ferb, one of which "The Monster of Phineas-n-Ferbenstein", received a Primetime Emmy Award nomination in the category for "Outstanding Special Class Short-format Animated Programs". He currently serving as Warner Bros. Animation's producer for the Cartoon Network series Be Cool, Scooby-Doo!