Duke (John LaMotta) is Martin's close friend. He briefly appears in the second season episode "Dukes, We Hardly Knew You" when Martin takes Frasier and Niles to Duke's bar called "Duke's", which is demolished later in the episode. He also appears as one of Martin's poker buddies in the fifth season episode "Where Every Bloke Knows Your Name". Sometime near the beginning of the eighth season, Duke moves to Florida. Duke is frequently referenced on the show, and Martin is sometimes shown speaking to him on the phone or returning from visiting with him. Duke is divorced and has a son, as well as a daughter named Marie (played by Teri Hatcher) who briefly dates Frasier in the sixth season episode First Do No Harm.