Prof. Mullaney was a chemist who was found by Shipwreck and Lady Jaye, the former of whom was given information on a formula for a new explosive which could only be unlocked by a pass-phrase. While the mission was initially a failure, Mullaney later found his own way off the island by rowing to the Joe's personal aircraft carrier.There's No Place Like Springfield (Part I)
He later created a nitrogen fueled engine, which was largely unstable.Joe's Night Out