The world of entertainment can often be overly romantic and optimistic. The upbeat, bubbly characters need to be balanced out with a little negative energy to stop things becoming too saccharine-sweet. Whether they're in adult sitcoms or animated kids' movies, we tend to feel some kind of connection to the characters that aren't so happy all of the time. They just seem a little more human and relatable, even if their negative traits are exaggerated. More often than not, these glum or grouchy characters also provide us with some comedic relief, which makes them even more lovable.
Click through this gallery for a roundup of the grumpiest, yet most beloved, characters in TV and film.