A standard comedy piece: something absolutely insane is going on, but only one person notices (or cares).
There are usually three stages:
- Bewilderment (Shock and Anger). The OSM looks around, realizes that something is wrong, and immediately has to face the maddening fact that apparently no one else sees what they see, or if they do, then they see nothing wrong with it. (This is not the same as Glamour Failure, though it may contribute to the fact. The character's anguish comes from the fact that others have access to the same information, yet he is the only one to come to the seemingly inevitable conclusion.)
- Trying to Explain (Bargaining and Denial). The character tries to explain why it is wrong to those who are accepting it as normal - and at the same time confirm for himself that he is not crazy. He may go to great lengths to be able to get proof, or yell, groan, cry, howl and berate, in the hope that someone will notice. Sadly, nobody does, and he may just make a fool of himself.
- Bitter Sarcasm (Acceptance). He gives up and just goes with the flow, finding refuge in a heartfelt loathing towards the stupidity of the world in general.
A Too Dumb to Fool character may be the Only Sane Man, although he is likely to be less worked up about the failures of others to see than in most cases.
The Only Sane Man is often relied upon as the Only Sane Employee. This character often ends up a Knight in Sour Armor. For a more horrific version, see Through the Eyes of Madness. For the sci-fi version, The Ignored Expert is your go-to guy. If all the other characters are otherwise sane, and really should see something, but only one guy does, he's an Einstein Sue. The Nietzsche Wannabe is a villain who views himself this way. Occasionally, when the Only Sane Man expresses his creator's opinions, he serves as an Author Avatar. See also Cassandra Truth, Surrounded by Idiots, and Surrounded by Smart People; contrast with the Unfazed Everyman. May temporarily overlap with What the Hell, Hero?.
If several characters take turns being the Only Sane Man, they're playing with a Sanity Ball. If it's a two-person show, with one person playing the Only Sane Man to the other's wackiness, it's a Straight Man and Wise Guy scenario. This trope is one third of a Comic Trio.
- Anime and Manga
- Comic Books
- Fan Works
- Live-Action TV
- Real Life
- Video Games
- Web Comics
- Web Original
- Western Animation