It can be tough to make a character work sometimes. If the comic relief misses the mark on being funny, they can easily become grating.
If a protagonist we're supposed to identify with keeps doing loathsome things, we try to take refuge in their more relatable friends. And that goes double if they're not even that interesting.
But whatever the reason these characters made us groan whenever they turned up, it's OK to admit it. We don't have to like everyone in our favorite shows.