Kleex

Kleex are a non-sapient species of pillbug-like parasites which are native to the planet Tammuz-an and known to infect larger creatures, such as Durkiis, by attaching themselves to the host's tail.

Being infected with a Kleex seems to be highly-stressful for the Durkii, given its change of temper from vicious to docile once the parasite is removed.

Appearances

 * Star Wars: Droids – The Adventures of R2-D2 and C-3PO, s01e06, "The New King" (1985)