Mite

Mites (, Mite) are small stick-figure-like creatures that are part of the Subspace Army.

In Super Smash Bros. Brawl
Mites appear as enemies in the Subspace Emissary mode. They come in yellow, red, or green varieties. Their attacks do minor damage (3-5%) and seem to have fixed or very little knockback. Sometimes, they are spawned in mass from Subspace Generators. They are weak on their own, but can be dangerous in the high numbers they spawn in. Their heads resemble the Subspace Army logo. Due to their small size, they are hard to hit and usually must be defeated with low attacks. They tend to attack with an aerial attack resembling a sex kick. They resemble Mr. Game & Watch in terms of movement and stance.

In Smash Run
Mites return as enemies, keeping their Brawl behavior: they appear in groups and gang up on the player. Only Yellow Mites appear. Like in Brawl they can also be summoned by Generators.

Some Mites appear in the enemy waves in the generic version of the Vs. Enemy Team final battle.

Spirit
The Mite appears in Super Smash Bros. Ultimate as a Novice-class support spirit.

In Adventure Mode: World of Light, the Mite is presumably one of the countless spirits captured by Galeem during his takeover of the universe. The Mite's spirit is located near the Base sub-dungeon of The Light Realm.

The Mites' Spirit Battle use an army of Tiny puppet fighters and is fought on the Shadow Moses Island stage.

Name origin
Mite's name is literally the word mite, meaning a small arachnid or other insectoid. This term can be more broadly used to mean something small, or of little weight.