Roz Doyle was his producer & call screener at Seattle's KACL Radio
In addition to Frasier and Martin, the rest 
of the main cast includes Roz Doyle (Peri Gilpin), Frasier's sharp-tongued, 
upbeat producer, who is ... Martin's deceptively intelligent Jack Russell terrier 
Eddie, Frasier's coworkers at KACL,