Dimwits

Dimwits or Heroic Idiots are heroes who rarely (if ever) use their heads, have no intelligence, or even have no common-sense at all (the former definition would be better classified as reckless). These characters are depicted as extremely ignorant, unwise, obnoxious, and are very likely to ruin their own plans. However, this is what they lack in the brain, they are more than making 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.

However, some of these heroic idiots can be considered NOT particularly ignorant or dumb, as some like Mordecai and Courage the Cowardly Dog can often be considered more careless, silly and sometimes ignorant as opposed to outright dumb. However, it is rare for idiots to reach the heights of characters like Patrick Star or Beavis & Butt-head in terms of stupidity.

Not all dimwits are unintelligent or ignorant, as even the most intelligent heroes may lack common sense. Geniuses like Jimmy Neutron and Dexter (Dexter's Laboratory) are highly intelligent but make utterly stupid decisions.

This is a common trope, especially if it applies to the protagonist, known as Idiot Hero. Check out Idiot Hero on tv tropes.

Their evil counterparts are dimwitted villains, but it is also possible for an On & Off dimwit to have their stupidity lead them to commit acts so questionable that they cause controversy and can be interpreted as villains. Do not add these sorts of characters to Villains Wiki if their crimes are a result of them being more ignorant than malicious and they are not met with lasting infamy within the work (e.g. Homer Simpson and SpongeBob SquarePants). In order for a heroic dimwit to count as a villain, they must commit serious crimes and cause harm to the point where their insanity causes them to voluntarily become dangerous and malicious (e.g. Beavis and Butt-Head, Peter Griffin or Lumpy).

They still have the possibility of qualifying as Pure Good as long as their limited knowledge does not interfere with their moral agency, and the said hero meets all criteria.