Lilliputian Warriors

A common science fiction and fantasy character type, these are Proud Warrior Race Guy meets The Napoleon, and named for the miniature race encountered in Gulliver's Travels. These are little people, typically antagonistic to humans but not always, who are a source of humor because of the contrast between their Hot-Blooded manner and minuscule size.

A subtrope of Lilliputians.

Examples of Lilliputian Warriors include:

Comic Books

Krage the Conqueror, in Marvel Adventures The Avengers #27. It doesn't work well for him.
The mouse police in Fables, which are of course a reference to something else.^[context?]

Film

The title characters of the movie Small Soldiers would probably count although they fit A.I. Is a Crapshoot rather than being a species.
The movie Willow has the Brownies.

Literature

Animorphs has the .0625-inch Helmacrons with egos the size of Manhattan. They appeared in #24 and #42, and were referenced in Visser when Visser One followed Visser Three's big speech about the glory of the Yeerk Empire with a comment that Visser Three sounded like he'd been hanging out with Helmacrons (rather than the Yeerks' hated enemies the Andalites, as she had previously claimed). They were made more dangerous by the fact that they could use the blue box as a power source for a weapon that shrank their opponents down to their own size. They were also batshit insane, as they only gave positions of authority to dead Helmacrons (and made Marco grovel to their captain). One male had the line "If you [try to resist] you will be killed. In fact, you may even be made captain!" When first seen, the males were subservient to the females, but Marco proved that they could be just as megalomaniacal as the females at the end of #24, when he goaded them into rebellion. In both books, there were two factions who hated each other for no real reason: #24 had the crews of the Galaxy Blaster and the Planet Crusher (though when one ship was destroyed, the other sang its praises) and #42 had the males and females.
His Dark Materials has a very similar group, Gallivespians, who are vicious six-inch assassins who ride dragonflies.
In the fantasy novel The Hounds of the Morrigan, the heroes, Pidge and Brigit, meet a group of Proud Warrior Race Guys who are earwigs. The insect, yes. They're not Funny Animals. Their leader believes himself to be Napoleon.
Discworld has the Wee Free Men/Nac Mac Feegle who are "The Smurfs as Violent Glaswegians".
- Also their close relatives, Gnomes that are more customed to city life.
In The Dresden Files, Harry presses a number of small faeries into service as this (through the simple process of pizza bribery). Do not underestimate the impact of dozens of lightning-fast faeries with boxcutters.
In Old Man's War, there is one planet inhabited by people who are almost exactly like humans, except they're only an inch tall. They're depicted as being hopelessly outmatched by the human military in ground battles, but at the very least evenly matched in space battles. Tiny ships can only have tiny weapons, but they're also too small to aim at properly.
Whereas it's the exact opposite in Bill the Galactic Hero by Harry Harrison. The Chingers are lizardoids only seven inches high, but as they come from a 10G world, they're able to throw the Space Trooper protagonist easily. Government propaganda portrays them as being seven feet tall so morale won't be affected.
In Time Wars book The Lilliput Legion, the villain genetically engineers an army of tiny warriors.
The sci-fi short story Sodom and Gomorrah, Texas by R.A. Lafferty has aliens who are every inch this trope. A census taker steals the tax list of a colony of tiny aliens (he'd been told to count everyone, no matter what their size). Their short and angry leader demands the list back, and when told by the dumbfounded mayor that it's been sent to Washington, is so annoyed at having to hike all that way he blows up the town with a bomb the size of a grain of sand.
The Puppeteer Parasites from the Harry Harrison Space Opera spoof Star Smashers of the Galaxy Rangers are furious that all other intelligent life is bigger than them despite their superior mental powers, and so launch a Evil Plan to take over the entire galaxy.

Tabletop Games

The Hobbits of the Dungeons & Dragons setting of Eberron are dinosaur-riding barbarians. Rule of Cool.

Video Games

In Final Fantasy Crystal Chronicles, the adorable, tiny Lilties are the warrior race whose harsh rule once encompassed the entire world.
Final Fantasy XI carries no race-job restrictions, so it is perfectly possible to create a Tarutaru warrior, dragoon, paladin, dark knight, etc. with the proper care and handling.
World of Warcraft DOES have race-class restrictions, but has gnome warriors as one of the available selections. Unlike other MMORPGs, differences in stat allocation between different races are negligible at best, so you are bound to see one shrugging off blows from a colossal wyrm at one point or another.
- To be fair, all races are Lilliputian Warriors when attacking a colossal wyrm.

Web Comics

The Perry Bible Fellowship does this.^[context?]

Western Animation

The Minutians from My Life as a Teenage Robot are similar to the Helmacrons from the Animorphs example, however their main threat is their ability to multiply. They may also be super-strong, but if so it is offset by the Conservation of Ninjutsu.