Heroes that rarely, if ever, use their heads. These characters are depicted as extremely idiotic, stupid, obnoxious, and are very likely to ruin their own plans. However, what they lack in the brain, they more than make up for in the heart (well, most of them). These heroes follow very few or no orders mostly because they don't seem to understand a word that is said so they do the opposite of what is said without thinking.
Dimwits, or Idiots. are villains who rarely, if ever, use their heads. In other words, these villains are seen stupid and simple-minded, and are very likely to foil their own plans or other villains' plans and can even cause them to ruin themselves, this is usually due to poor planning. However, some of these villains (such as Beavis and Butt-head) can be viewed as being amoral, as they may not always be aware of their actions due to their stupidity.
This list does not apply to characters who are mentally challenged (such as Leatherface, Jason Voorhees, etc.), as there is a major difference between the two.