Poorly written comic-reliefs

A Comic Relief is the additional humorous character, scene, or witty dialogue in otherwise serious work, often to relieve tension. Comic relief usually means a release of emotional or other tensions resulting from a comic episode interposed amid serious or tragic elements in a drama.

Comic relief characters have existed since the beginning of sound cartoons, with Goofy from Disney's Mickey Mouse series being one of the first and earliest comic reliefs ever created in the history of animation. Comic relief often takes the form of a bumbling, wisecracking sidekick of the hero or villain in a work of fiction or even a comical main hero or villain. A sidekick used for comic relief will usually comment on the absurdity of the hero's situation and make comments that would be inappropriate for a character who is to be taken seriously. Other characters may use comic relief to irritate others or keep themselves confident.

Some comic reliefs are possible done right, and when executed to perfection, a few of them can become fan favorites on the show. Take Roger Smith and Patrick Star from American Dad! and SpongeBob SquarePants, they’re doing the done-right version of comic relief, and they've become a fan favorite on their respective shows (that is, until seasons 8-present and seasons 6-9a came around in their respective shows). However, in a TV show or a movie, sometimes, comic relief can be considered pointless to the shows or films/movies. Take Jar Jar Binks from Star Wars, served no purpose in the film series and received tons of negative feedback from fans of the franchise.

Most comic relief characters, however, are incapable of being the main stars of their show or movies (unless they done right), and comic relief spin-offs like mh:terribletvshows:Planet Sheen learned that the hard way. However, the opposite case happens to some comic relief characters due to them having more complex personalities aside from just being comic relief which enables them to stand on their own as individual main protagonists in their own right, with Donald Duck, Goofy, and Dory being good examples of comic relief characters that are capable of being the main stars of their shows or movies because of it.

For a list of poorly-written and well-written comic-reliefs, see here.

How to make a well-written comic-relief

 * 1) Don't make the character way too goofy, stupid, and happy-go-lucky just because making comic reliefs are too difficult. Some comic reliefs are downright annoying and either bullies, pranksters, or troublemakers.
 * 2) Avoid making a joke that is too offensive to some people, and make it very simple and well-written.
 * 3) Also, give them some flaws because some comic reliefs have flaws too.