Kelsey Grammer Dr. Frasier Crane Actor, Executive Producer John Mahoney Martin Crane Actor Jane Leeves Daphne Moon Actor David Hyde Pierce Dr. Niles Crane Actor Peri Gilpin Roz Doyle Actor Tom McGowan Kenny Daly Guest Star Christine Kludjian Tiffany Guest Star David Richard Thompson Leon Guest Star Tom Beyer Singer Guest Star Edward Hibbert Gil Chesterton Guest Star David Angell Executive Producer Peter Casey Executive Producer David Lee Executive Producer, Director Christopher Lloyd Executive Producer Joe Keenan Executive Producer David Lloyd Writer