Doctor Nastidious

Doctor Nastidious is the main antagonist of Nitrome's Test Subject trilogy. He is an evil scientist who performs dangerous tests on Blue.

Biography
Nastidious first appeared in Test Subject Green, the second game. He learned about the Scientist and his Blue Enzyme, and sent mercenaries to spy on Xeno Industries. After a few days, Nastidious and his mercenaries attacked the laboratory, and brutally killed the Professor while Blue continued his tests. Nastidious takes Blue to his facility, where Blue was forced to complete tests in a new, sinister looking tank, with advanced weaponry to toughen Blue as fast as possible. After day 30, Nastidious created a new, AI suit for Blue, named Rex209. After making sure Blue and Rex were compatible, Nastidious returned to the derelict Xeno Industries to try to find the formula to make more Blues. When he was unsuccessful, he completely destroyed the lab in rage. At his return, he discovers that a mercenary accidentally let Blue escape. He releases the evil orange and green enzymes into the lab to try to catch Blue. However, Blue finds the Professor's corpse in the lab and revives him by entering his mouth and becoming his new life force. The Professor finds a large-scale version of Rex, and, donning the suit, goes into battle with Nastidious and his Machine. After a long battle, the Machine is broken and Nastidious is thrown, critically injuring him. He activates a self-destruct sequence as a last attempt to destroy Blue and the Professor, but they escape.