Incompetent

Heroes who have a habit with accidentally bungling their own plots more than the ones of villains they're fighting against (unless if said villains are the same), often due to stupidity, cowardice, lack of strength or willpower, overconfidence, poor planning, and/or unwillingness on their part.

Incompetent heroes often have plans that are ultimately stupid with little to no effect (as well as a lack of foresight), have short-term competence that didn't work as much as they intended, are rather aimless or sometimes otherwise do so little but to cause chaos and disorder in rather clumsy, impractical, pointless or ineffectual ways rather than helping out themselves as well as other heroes on the long term. Sometimes, they are so unprepared and careless, their hasty decisions and/or ill-advised attempts at doing something good will just blow up in their faces more times than not in a bumbling fashion, which their shortcomings could lead to either causing themselves to be left open to great harm, making a fool of themselves, disappoint their allies, aid the villains, make a situation worse or even aiding their own rivals in a pitiful and humiliating way instead of aiding themselves and/or the heroes (which can make them come off as comedic relief in some narratives). However, even masterminds such as Hokey Wolf for example, can still be classified as incompetent if they meet any of the previous qualifications and if they're characters who are made out to be smart in the media they appear in despite their inefficiency, especially if their intelligence varies. This shows that just because they're useless that does not mean that they aren't smart. It is possible for heroes to be good in a certain field in heroism, but still are too cowardly, are lacking in common sense, are too lazy or are too arrogant to get the job done.

For obvious reasons, these heroes are likely not successful, and depending on the circumstances, this could make some of them reach scapegoat territory if their continual lack in skills or success are what makes them inept and hopeless with a dose of bad luck rather than being competent. However, in certain cases, they can still succeed in their goals, albeit they have the help of much more competent heroes, sheer luck, or by learning from their past failures to become much better people (e.g BoJack Horseman, Cedric the Great, Eddy).

Keep in mind that this category only refers to incompetence in terms of heroism and helpfulness, not professionalism or occupational skills (heroes who show incompetence at the latter should go under Dimwits, Misguided or Arrogant instead).

Pure Good heroes will NEVER qualify as this since they are capable of performing wondrous heroic acts and causing galvanization to others in a story which actually makes them incredibly competent and very beneficial in vast contrast.

Even if, in very rare cases, some Pure Good heroes that come off as somewhat incompetent (e.g. Luigi, Po, Hubie, Emmet Brickowski, 9, Forrest Gump, Flik, Chip, Dewey Riley, Michelangelo (TMNT 2012), Papyrus, Walter Beckett, Ashley Graham, Bruno Madrigal, Flint Lockwood, Chicken Little, Bolt, Roddy St. James, Slippy Toad, Mario (The Super Mario Bros. Movie), and WALL-E), they're still capable of doing serious heroic acts and thus, they must go under Cowards, Comic Relief, Dimwits, Misguided, and/or Weaklings categories instead.

This can also be said for otherwise NON-Pure Good heroes for their heroic acts and capabilities despite showing slight incompetence (e.g Deadpool, The Grinch, Pinkie Pie, Monkey D. Luffy, Medic, Cool Cat, The Cat in the Hat, Mr. Bumpy).