The exact opposite of the Wide-Eyed Idealist. A Grumpy Bear is grim and gritty, ready to do the most unspeakable deeds to win. Yet he's living in a world of rainbows and fluffy bunnies! This character is a Wrong Genre Savvy cynic living in an ideal Happily Ever After setting; the Grumpy Bear lives in a rose-colored world, is constantly frowning and is wearing Jade-Colored Glasses. Those who are known for being grumpy are usually known for being either The Stoic or the Ice Queen at times.
Can be treated as a Butt-Monkey — and the audience is primed to laugh rather than worry about their misfortunes. Often an Ineffectual Loner to boot. Unlike his polar opposite (who will inevitably die or get its ideals smashed and be rendered a hollow shell of its former self), the Grumpy Bear will at least get through a cynical story in one piece. In (most) idealistic stories, he will either learn An Aesop about The Power of Friendship and The Power of Love and live — well, Happily Ever After, or at least be left alone, its grumpiness being mainly used for comedy. He is known for being Good Is Not Nice and The Killjoy.
A Grumpy Bear who works with the other characters despite his skepticism is a Sour Supporter. This trope is a specific type of Anti-Hero or Unsympathetic Comedy Protagonist. Particularly extreme types have a tendency to be blinded by their cynicism in works in the middle of the scale, and to be downright wrong in idealistic ones.
Compare The Eeyore, who's pessimistic and depressed rather than grumpy.
- Wobbly-Headed Bob, a character created by Jhonen Vasquez fits into this trope in a fairly extreme way. The character himself is something of an Insufferable Genius and/or Nietzsche Wannabe who lives in a world where dumb but cutesy creatures live in blissful ignorance. Bob himself condemns others for their ignorant nature and tries to expose others to the supposed horrors of reality, upon which they are usually Driven to Suicide. He does get called out for this, with a pig once telling him that it's ridiculous to tell happy people they're supposed to be miserable. The pig is eventually talked into killing himself.
- Scott Pilgrim: Kim Pine in is this early on in the storyline; she later becomes far more agreeable.
Hollie: Have you always been this way?
Kim: What way?
Hollie: Like, a totally hateful bitch.
- The Pieces Lie Where They Fell: Night Blade is pretty grouchy a lot of the time, and given his history, who can blame him? About the only time he's happy is when Page Turner is around him.
- The Pokémon Squad:
- June is a good example, constantly acting grouchy and rude when she isn't about to tear someone's head off.
- RM, the protagonist, especially as the series went on. He usually acts pretty dismissive, and one episode indicates he sees stormy weather as the perfect day.
- Barney Frank, the Aloof Big Brother of Barney. However, it's for good reason: Barney Frank landed a job on Barney and the Backyard Gang, but suffered an injury and Barney ended up replacing him. Barney was highly successful as an entertainer, which lead to Barney Frank (who became president) trying to imitate him while visiting Saudi Arabia. Osama bin Laden kicked him out and he also got impeached, which made him hate Barney.
- Of the main characters in Dawn of a New Age: Oldport Blues, Simon is easily one of the most dour. He refuses to get involved with the antics of others, makes snide remarks about them in his head, and would rather be left alone than take up any offer of companionship or adventure.
- The internet gave us Tard, the grumpiest cat in the world. Subverted: she actually isn't grumpy, she just looks that way.
- Drizzle from Ask King Sombra.
- In the videos of Thomas Sanders, things tend to be upbeat, cheerful, optimistic, and goofy. Virgil, however, is grumpy, pessimistic, and sarcastic towards just about everyone. He's getting cheerier, though.
- In Kid Time Storytime, most of the puppet characters are depicted as joyful, but Maleficent is cranky.