Gender Male
Race Artificial intelligence
Status Still working
Powers Control over computers, can infect any computer with a virus
First Appearance Deadly Ransom
Voices David Rappaport, Tim Curry (after David's death)

MAL is an artificial intelligence, presumably created by Dr. Blight, although this is not explicitly stated in the series. However, in the episode Tree of Life, it is revealed that MAL was originally a very friendly computer who liked to play games. Dr. Blight reprogrammed him with her evil ideas, changing his personality as well as his appearance; this gives us the possibility that Dr. Blight might have stolen him rather than created him. MAL's so-called original face looked like that of a young man's with glasses on a computer screen. In the episode Polluting by Computer, where MAL was first seen, he had three different faces that seemed to resemble those of monsters but his faces were only seen once while his face was just a blank screen for the rest of the episode. In MAL's second appearance, Deadly Ransom, his face resembled a man with glasses and a moustache in the colors of green, white and black and that has been his face ever since. 

MAL has the ability to hack into other computer systems, take over them and reprogram them mainly to Dr. Blight's specifications. He is often the control and main power source of everything in Dr. Blight's labs as well as the vehicles she travels in. Blight often flirts with him and he often seems to do the same. There are also times where he argues with her and even ridicules her that her plans won't work and usually he's right.

MAL was originally voiced by David Rappaport. After Rappaport's death in 1990, Tim Curry took over the role.