I posted this question in the "The Ropers" topics, but I figured I'd get a quicker response here. Did the characters of Stanley and Helen Roper ever appear on Three's Company after their own show was cancelled? Were they ever referred to again?

Yes, they made one appearance in Season 5 and got to meet Cindy and Mr. Furley. Then after that they were never mentioned again.

Did the characters of Stanley and Helen Roper ever appear on Three's Company after their own show was cancelled? Were they ever referred to again?

They were referred to as late as episode 12 (Ralph's Rival) in season 4 after they left Three's Company. But BigCookie is right, after their show was cancelled the last time we saw or heard of the Ropers was when they visited in season 5.

They were referred to as late as episode 12 (Ralph's Rival) in season 4 after they left Three's Company. But BigCookie is right, after their show was cancelled the last time we saw or heard of the Ropers was when they visited in season 5.

That's the episode where Helen ends up in bed with Ralph, right? IMO, the funniest Ropers moment in the entire series.

That's the episode where Helen ends up in bed with Ralph, right? IMO, the funniest Ropers moment in the entire series.

Yes, it's called "Night of the Ropers" and it was in Season 5. Helen "leaves" Stanley and stays in Furley's apt because he's supposed to be away for the weekend. But he comes home early, climbs into bed and hijinx ensue.

Night of the Ropers was the last time Chrissy was mentioned by name too.

I think they referred to her in the very last episode. Janet says she wishes Chrissy was there for her wedding.

I think they referred to her in the very last episode. Janet says she wishes Chrissy was there for her wedding.

Nope, Chrissy was completely forgotten after Season 5.

If Janet was listing people she wished had been at her wedding, she should have started with her own parents, sister, and the Ropers.