- Bring Me All Your Elderly has movie!Zhao, who is In possession of knowledge from the Super Secret Spirit Library!!!... erm, slightly more unhinged than usual.
- Part Right, Half Wrong, a Third Crazy
- Socrates of Calvin and Hobbes: The Series, who listens to heavy metal music to get to sleep.
- For a moment, Calvin in the fanfic Theories About Nuclear Winter when talking to Susie Derkins about working on a shrimp farm in Florida, and wondering if they farm crabs.
"I'm going to work on a shrimp farm. Or something. Some kind of farm. Do they farm crabs? I mean, they must. It's not like crabs just walk into the grocery store. Though I guess they could if they wanted to. Wouldn't that be funny? I don't know, maybe not. But I guess if I was farming crabs I might get pinched. What?"
- In The Bridge, Megalon is basically a Kaiju version of Pinkie Pie.
- Dungeon Keeper Ami features Cerasse- one of the fairy sisters. She has a thing for Tserk, one of Ami's minions... A tentacle monster- to the extent that she has a great deal of trouble prepareing calimari ("Oh, I can't! The poor little tentacles!"). When the sisters contemplate 'rescueing' Jadeite from Mercury, she is quick to volunteer that they ought to rescue Tserk as well, earning her some strange looks...
- In Hunting The Unicorn, Nick of the Warblers is a Hot-Blooded stoner who's prone to strange logic despite his general intelligence. He has "three definitions of truth" according to Wes, his Coming-Out Story at sixteen involved getting drunk and high after his mother kicked him out, and when his best friend Jeff is upset at being the last one to find out about his bisexuality, Nick offers to pretend it didn't happen yet. Jeff's response is "Nick, you can't redo coming out!"
- In Teenage Jinchuriki Shinobi, Michelangelo is the only one not disturbed by Jiraya and Gai's poses and behaviorisms, something of which the latter was enough to make Naruto warn his team to not look.
- In All the Dementors of Azkaban Harry is depicted as nearly as much of a Cloudcuckoolander as Luna, from trying to "make friends" with Dementors by offering them chocolate to painting Azkaban pink at Luna's request to cheerfully running errands in Diagon Alley for prisoners like the Lestranges.
- In Session Transcripts brain damage from more-abusive-than-canon treatment by the Dursleys results in Harry being extremely Cloudcuckoolander-ish when he shows up at Hogwarts, spouting random remarks like "I can't eat a table, but I tried to eat my door once because I was so hungry. It didn't taste very good and I chipped a tooth." and "Plants talk to me sometimes, but sometimes they're allergic to me and I make them sneeze."
- Ganmed Lomust in Hivefled. Spacey, Obliviously Evil subjugglator who writes truly terrible fanfiction. One of the more popular fantrolls, probably for this exact reason.
- The Lion King Adventures: Pori, Zazu's Love Interest in Series Four, is a hyperactive, insane hornbill. It turns out she's faking it, though.
Zazu: If I had a mango, and you had a mango, then how many mangos would that be altogether?(Pori just stares at Zazu, smiling.)Pori: I like mangos!
- A Brief History of Equestria mentions that most contemporary portrayals (mainly Hearth's Warming Eve pageants) of Chancellor Puddinghead are severely downgraded from the original, whose behavior bordered on The Caligula mixed with Groucho Marx. In other words, when Pinkie Pie was ranting about 'thinking inside the chimney' and wearing a map on her face, she was trying very hard to be solemn and dignified.
- The Changeling of the Guard: Exiled changeling protagonist Idol Hooves, having spent most of his life in The Hive and being mostly ignorant as to how the outside world works, has some very strange ideas and thought processes, some of which threaten to expose him for what he truly is. He genuinely has no idea what things like jail cells and cement are, and takes a leisurely stroll through an ancient booby-trapped crypt without realizing that the traps are supposed to be deterring him.
- Mirror Rarity in The Dark Side Of The Mirror Verse. Her misunderstanding of social rules and fashion ideas in general is so mixed up, she genuinely thinks her bizarre fashion tastes are completely normal and following the rules, and that her vandalism is simply improving things. Justified, as her parents stuffed her head so full of contradictory ideas and rules, she ended up not entirely sane trying to apply all of them at once instead of applying different ones to different situations. She gets a bit better thanks to Mirror Flim and Flam, but still remains a bit out there, such as trying to apply fashion to Twilight's Superpowered Evil Side.
- Harmony Theory: Blaze's speeches are enough to make some fans suspect him to be Pinkie's descendant.
- My Little Mages: The Nightmare's Return: Pinkie Pie, obviously, though being human somehow makes it seem more extreme.
- In Ultra Fast Pony, Sweetie Belle admits that she doesn't live in the same world as the rest of the cast:
Apple Bloom: Sweetie Belle, you're just living in your own little world most of the time, aren't you?
Sweetie Belle: In my world, everything is made of sulphur!
- Gahmah Raan in Star Wars: Paranormalities. Starting with his debut in Chapter 9 of Episode I, he just comes off as incredibly eccentric, is aware of things no one else would be aware of, and annoys the other bounty hunters on the same contract. However, he is by no means incompetent, as by the end of the bounty hunter arc, he had eliminated nearly all of his competition and captured his target, lure Zolph Vaelor over to Maesterus, and match Zolph in a duel that ends in a stalemate. Still doesn't keep him from being fascinated by things like Maesterus's wings and asking if he can keep them. Episode II then revealed that his eccentricity is a result of him being passively driven insane by an Eldritch Abomination on his own homeworld as a child, and according to him, he and his wife are among the only sane members of their species. However, while he is genuinely insane, it is suggested that he sometimes exaggerates it to get potential enemies to underestimate him.
- The sidestory Odd Partnerships, featuring Gahmah Raan as one of the lead characters in his early bounty hunting days, also looks into his eccentricity and how dangerous it can be. An offhand comment mentions that a Dark Jedi once tried to forcefully probe Gahmah's mind only to end up being turned into a gibbering vegetable. In-story, combined with being Force-sensitive but dangerously untrained, he - against all logic - somehow mind-tricks a thug into jumping to his death by accident.note
- The Teenage Mutant Ninja Turtles fanfic The Long Walk has Leonardo musing on the Original Character Breech Loader, thinking about what it must be like to have to try to be normal. Breech Loader is a Cloudcuckoolander with a badly warped appoach to grasping normality, and a tendency to 'lose it' at the most inappropriate of times. As a quote from the story itself:
Trying to be normal. He wondered what that was like; to try to be normal. Most people were normal, or normality came naturally. Or behaved however they saw as normal. Even most crazy people thought they were normal. Breech was trying to mirror their behaviour to be normal, and like a mirror, it came off wrong. Identical in every way, but somehow wrong; a facade, an illusion. What must it be like, to have to try to be normal?
- raocow takes on a persona like this in his Let's Play entries. See: his Kamek's Revenge Let's Play, where he declares a fear of circles and refers to a flower that spits items when fed an egg or enemy to be "an altar to our dark flesh god".
- Farfalla The Butterfly Kitten, a prolific Fan-Fic author and creator of the All-Ages Kirk/Spock Archive, is clearly one of these. Just look at her name. Also, only a Cloudcuckoolander could write This. Or This.
- Always Having Juice has the alternate universe version of Metal Sonic, whose mental faculties appear to be malfunctioning. He believes he is "The Real Sonic", and frequently tries to prove it using stripes, the true meaning of Hanukkah, and the letter F. The viewers have caught on to his nuttiness, however, thus resulting in questions such as "what is your favorite flavor of frisbee?" (for the record, it's Satanic Death Christ).
- The fan-made role-play Deadly Mistakes has Mathew. Given that he's also a Talkative Loon, he provides a lot of comedy.
- Nappa of Dragon Ball Z Abridged:
Vegeta: Nappa! No! It's a trick!
Nappa: But Vegeta! Trix are for kids...
- Enter Ken Finlayson: The titular character is viewed as one by the people of Norrisville due to his belief in the cryptozoological, the extraterrestrial and the supernatural but he really isn't. Still, many in-story believe him to be.
- Marty McSuperfly in Captain Garlic's Let's Play of Icewind Dale 2. Watch out for him when he gets near the wisdom-enhancing items, or goes by the mushroom fields in the Underdark.
- Oddly enough for a war story, Private Lenham Remer in The Legacy Of The Blood Ravens is a perfect example. When he's not kicking ass with his squad, he can be found musing about subjects like Space Bears, and if Space Marines can ride them.
- Mega Man Recut has Dust Man and Metal Man.
- Ignacio "Cio" Lumbre in Seven Devils is this trope, considering that when there was a fire, he tried to save the puppies before himself. Of course he did start the fire, and felt a little guilty.
- Eric the Hedgehog from Sonic X: Dark Chaos embodies this trope. He's an Idiot Savant Talkative Loon who loves breaking the fourth wall and talks to his weapons like they have personalities. Deconstructed later on - not only is it revealed that he's physically brain-damaged due to imperfections in Maledict's cloning process, but he's fully aware that his thoughts aren't entirely normal and has hidden crippling depression as a result.
- Major Raikov in Stray, a Metal Gear Solid fanfic, is "always the type who took sanity more as a suggestion," to the extent that Ocelot considers Raikov's Psycho Electro boyfriend to be the stabilizing influence in the relationship.
- Demykins from Those Lacking Spines, a Kingdom Hearts fanfic, behaves in this manner, with a multitude of his lines as shoutouts to other media; when he doesn't quote from various works, he ignores the situation altogether.
- Which is also the common fanfiction depiction of regular old Demyx, because 90% of the people who write fanfiction have absolutely no concept of what makes Demyx Demyx. Or any other character, themselves.
- Touhou M-1 Grand Prix has several boke that do this, to contrast with the straight man.
- Viole from the "Towerof God" fanfic Dei Fabula; About to get burned by flames that can melt rods of steel in milliseconds? Ice-cream daydreaming time!
- Not to mention that prior to that, his method of getting rid of a parasite that was mind-controlling the neighbourhood's friendly firebreathing Damsel in Distress was to french kiss her as opposed to simply sticking his fingers down her throat like his canonical counterpart did.
- DRACO MALFOY in A Very Potter Musical.
- Snape is an even bigger example, especially in the Potion Master's Corner.
- And then there's Gilderoy who dreams of becoming king of the mice.
- Momoko from Wedding Peach Abridged:
Jamma-P: HEY, I DIDN'T WRITE THIS SCRIPT SO DON'T COMPLAIN TO ME!!!!!
Yuri: Wow, someone needs a nap.
Momoko: Is it me?
Yuri: No. No, it's not Momoko.
- The main character from Whispers in the Dark, a Percy Jackson and the Olympians fanfiction about the daughter of Thalia and Luke.
- Tristan from Yu-Gi-Oh! The Abridged Series is a combination of a Cloudcuckoolander and a ditz. Almost every line that he gives is an illogical non-sequitur, such as his randomly given cry of "Burn the Witch!!" and "Take off your clothes!"
- The sad thing is, these two examples are him being coherent in the context of the scene.
- More extreme examples of his Cloudcuckoolandiness include "I like pudding!" and "I farted, it's funny!"
- Marik is this and Poke the Poodle. His evil plans include pushing Yugi off a boat so that his hair will get wet and it'll take hours to dry, and borrowing Yugi's puzzle and not giving it back to him...for at least another 2 months. He also invited Dan Green to the Evil Council because he played a villain in one of the Pokemon movies, and seems to believe that there is a difference between killing someone and just 'destroying them a little'. And then there's the standard weirdness.
Marik: By the way, Bakura, your costume could use some work.
Bakura: ... what?
Marik: I mean, I don't like to criticize, but it looks like your mother made that for you!
Bakura: Marik, this isn't a costume. It's my clothes.
Marik: Well, you could have done a better job is all I'm saying!
Bakura: A better job of WHAT?