275. A barbarian who only eats meat raw.

276. Gets distracted by anything shiny.

~SE++

277. Likes to discuss gardening.
278. Wants to start their own restaurant, and asks for the recipe of every meal they eat.

279. Cannot read or write.

280. Gives the longest explanations possible.
281. Believes that sneezes are souls trying to escape the body.

~SE++

282. A Warrior who insists on licking his melee weapons clean after every battle.
283. A Thief who deposits an IOU message in his pick pocket victims pockets.
283. A Cleric who worships a different God or Deity each day of the week.
284. A Mage who tattoos his knowledge of spells onto his own body instead of recording it in a spell book.

285. A barbarian who is overly nice and extremely courteous when not raging.

286. Only speaks in puns.
287. Everything s/he says is sarcasm.
288. Always fails at math, even 1+1.
289. Other people's things end up in his/her pockets, though s/he doesn't actually steal them-just pick up dropped items.
290. Believes s/he's a polymorphed dragon, and constantly threatens to change back.

291. Insists all insects are the "reincarnated" and refuses to step on them or swat them.
292. Has a phobia of fire and flames even as small as a candle.
293. Is obsessed with strategy, tactics and planning even for the simplest of encounters.
294. Believes s/he's always being "watched" by hallucinatory fairy folk.

295. A barbarian who thinks they are a druid. After a fit of rage they always assert that "I just transformed into a bear and went wild".

296. Grows progressively grumpier the longer they are away from tavern pleasures.

297. Is allergic to precious gems and metals (or believes he/she is) and keeps all wealth in other forms.

298. Counts every step they take out loud.

~SE++

299. Catalogs every enemy they fight in a notebook. Claims it is for research.

300. Drinks from their waterskin overly frequently and constantly asks others to stop so they can pee.

~SE++

301. Is uncomfortable on foot. At home on (riding animal of choice).
302. Seems sober only when drinking. When sober seems drunk.
303. Has no sense of the fourth wall.

304. Insists on eating and sleeping at set times,regardless of situation.

Where is the copy/paste-able list? We are in the google results here!

Oh wow ... just checked ("character quirks") and we are in like the top 25 or 50 hits (I'm too busy vibing to count). We're still not even half way to the titular 1001, but that's still a damn good achievement: congrats everyone.

On-topic Necro:

305. An "intelligent" barbarian who rages when something doesn't make sense to them ("There is no way that thing's bone density is light for it to fly, but guess I can't rely on my understanding of basic aerodynamics, right?!", "oh sure: using Flesh to Stone on that guy would turn him into a marble statue and definitely not some vaguely humanoid lump of coal!", "wait wait wait ... the tree told you our mark went this way? the tree, which has no brain, no mouth, no friggin' way to articulate distinct ideas with its respiration, told you this!?")