William Stanford Davis is an American actor. He is best known for his role as school custodian Mr. Johnson on the ABC sitcom Abbott Elementary (2021–present), for which he earned a nomination for Outstanding Supporting Actor in a Comedy Series at the 54th NAACP Image Awards and won the Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Comedy Series. His career began with a minor role on the soap opera The Bold and the Beautiful in 1995 and includes recurring roles on the Showtime television series Ray Donovan and the Apple TV+ television series Swagger.