TV characters who were unseen- until later in the series

He only got that job by kissing The Big Giant Butt.

What about Eddy’s son on Absolutely Fabulous? Did he ever appear?

Did Sheridan of Keeping Up Appearances ever appear?

I know Hyacinth’s sister Violet was referenced to a lot but didn’t appear till the last season

Would the “little red-haired girl” from Peanuts count? She was never seen in the strip, but did appear in a couple of animated TV specials.

Carlton, your Doorman from Rhoda. Voiced by Lorenzo Music, his arm was seen and the back of his head was seen. The show he was on was a spin-off from the Mary Tyler Moore show and they attempted a third spin-off, as an animated series.

As in the posh British pronounciation of “schedule.”

<fingers in my ears> LA LA LA!! I CAN’T HEAR YOU!!! That NEVER HAPPENED! And her name CERTAINLY isn’t Heather!

True enough. From the Wikipedia page I linked to:

And from the page it cites as a reference:

Though I CAN accept the holiday themed (notable exception: New Year’s Eve) specials as “canon”.

And Chuck Cunningham…

There were references/phone calls to Mary’s parents…I believe they showed up for a visit sometime after the first couple of seasons.

I’ve heard that LRHG did appear in a canonical strip drawn by Schultz himself, albeit in silhouette, and non-speaking.

I’m British, and I’ve never heard anyone pronounce schedule as shool.

I always pictured Juliet Landau as Maris.

1st season. I’ve only seen the 1st season and he was in the last episode.

He appeared in a follow-up special to the series. (5:40 in this.) He was basically a gay male version of Saffron- very “straight” laced and serious and living in NYC. He and Edina reunite but can’t stand each other, but she absolutely adores his queeny partner and vice versa.

I don’t think Sheridan was ever seen.

Friend’s Ugly Naked Guy. Talked about him a lot, but he only made two appearances–once when they were poking him, and once talking to Ross.

Sir Roysten on Drop the Dead Donkey, very last ep IIRC.

Number One in The Prisoner, of course. Showed up (or did he?) in the very last episode.

Pshaw, there is no Mrs Columbo.

On the daytime series “Dark Shadows”, after the first season, virtually every main character had been mentioned for at least some time before they were seen. Sometimes for long periods of time before they were seen… Barnabus Collins, Quentin Collins, Angelique, etc.