Rebecca Howe
Frasier is a spin off of Cheers, a 1980's sitcom. Frasier plays a unhappily married character on Cheers, and after cheers went off the air, they continued his story on his own show -Frasier.
Yes, Niles Crane, played by David Hyde Pierce, was a character in the show "Frasier," which is a spin-off of "Cheers." However, he never appeared in "Cheers" itself. Niles is introduced as Frasier Crane's brother in "Frasier," but their family dynamics and backstory were not explored in "Cheers."
Rebecca Howe (Kirstie Alley) Nor has Nick Tortelli (Dan Hedaya) .
Coach, played by Nicholas Colasanto, died during the third season of "Cheers." His character's death was addressed in the show's storyline, with the character's passing occurring off-screen. The series paid tribute to Coach, and his absence was felt by the remaining characters in subsequent episodes.
Frasier was an American sitcom, and spinoff of Cheers, that followed a psychiatrist as he tried to adjust to life after divorce. Peri Gilpin played the character Roz Doyle.
1984
Bebe Neuwirth
I believe Kelsey Grammer is the ONLY actor who has been nominated for an Emmy for the same character in three different shows. He was nominated for Supporting Actor in Cheers, Lead Actor in Frasier and Guest Actor in Wings - as Frasier Crane in all three.
Colasanto died of a heart ailment on February 12, 1985 at the age of 61 (source: Wikipedia)
Cheers, Frasier, Hank, Back to You
The Jack Russell terrier's real name is Moose, but on Frasier, he played a dog named Eddie.
"The Tortellis" which wasn't very successful, and "Frasier," which was.