No, he wasn't. But the actor that portrays him, Dan Butler, is.
In real life, so is John Mahoney and David Hyde Pierce.
The name of the episode is "Out With Dad".
Frasier
Frasier - 1993 Frasier Gotta Have It - 5.19 was released on: USA: 21 April 1998
Season 5 episode 1: Frasier's Imaginary Friend
season 3 "frasier loves roz" this is the one that roz thinks that frasier loves her and then in the end roz tell frasier that she loves him
The name of the episode is "Out With Dad".
Frasier
Frasier - 1993 Frasier Gotta Have It - 5.19 was released on: USA: 21 April 1998
The duration of Frasier is 1440.0 seconds.
Raymond frasier is a ninja monkey
Frasier - 1993 Frasier's Edge 8-9 was released on: USA: 9 January 2001
Frasier - 1993 Frasier Gotta Have It 5-19 was released on: USA: 21 April 1998
Frasier - 1993 Frasier's Curse 6-2 was released on: USA: 1 October 1998
Season 5 episode 1: Frasier's Imaginary Friend
Frasier - 1993 Frasier's Curse 6-2 is rated/received certificates of: Canada:PG (video rating)
Frasier - 1993 Frasier Gotta Have It 5-19 is rated/received certificates of: Canada:PG (video rating)
Frasier - 1993 Frasier's Edge 8-9 is rated/received certificates of: Canada:PG (video rating)