Hoojib

The Hoojib were a species of small, sentient, sedate, Force-sensitive bunnies from the tranquil safeworld of Arbra. Long before the Galactic Republic, the li'l guys had disabused themselves of their "bad emotions", locking them away in a vault to fester and ooze (which they did, eventually forming The Darker).

When the Rebel Alliance stumbled upon their remote homeworld, the Hoojib, through a bunny called Plif, quickly established a rapport with Luke Skywalker, and accompanied him on all sorts of wild goose chases. When the Nagai and then the Tof made their respective attempts at galactic conquest, the Hoojibs joined with the Alliance of Free Planets to repel the invaders. For small, peaceful rodents, they were surprisingly effective in combat, and many a screaming bad guy fell to their might.

Oddly, after the dust settled from /those/ conflicts, no one ever saw any Hoojibs again.