Opal Koboi - truffle loving, murderous, paranoid, insane - these are just some of the words used to describe this evil pixie. She is the founder of Koboi Labs and Foaly's arch-enemy. She also supplied the goblins with weaponry during the Bwa'Kell rebellion. Opal is a certified genius with an IQ of over 300 and is currently in custody in a high-security LEP prison in Atlantis.