Filibuster, A.K.A. Experiment 423, is an illegal genetic experiment created by Jumba Jookiba. He is designed to break equipment (does so by using his expandable cement body secretions to cause damage). His one true place is working for a construction company.
Experiment 423 was the 423rd genetic experiment created by Jumba with Hämsterviel's funding. He was designed to break equipment.