Clickster, A.K.A. Experiment 239, is an illegal genetic experiment created by Jumba Jookiba. She is designed to annoy enemies by clicking her castanet-like hands. Her one true place is as a pair of castanets in an orchestra.
Experiment 239 was the 239th genetic experiment created by Jumba with Hämsterviel's funding. She was designed to annoy enemies by clicking her castanet-like hands.
239 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai. At the unknown point, she was activated, captured, tamed, and named Clickster.
This experiment is mentioned in "Drowsy" when Pleakley said, "Experiment 239 designed to cause traffic jams." However, she does not cause traffic jams; she was mistaken for Stopgo, Experiment 102 (whose pod was mislabeled with her number due to Jumba's untidy database).
Clickster is a red experiment that looks like a pair of castanets.