I was going to say that's a different decade, but Mr. Bean first aired in 1990, and Harley Quinn first appeared in the Batman The Animated Series in 1992.
And that Mr. Belvedere was based on a series of movies from the 1940s. Why did a series of 1940s movies become a 1980s sitcom? I have no idea, but it apparently worked because it was on for six seasons.