Professor Milo (DC Animated Universe)

Doctor Milo has his hands in just about every dirty deal in Gotham. Milo specializes in under world activities, and was a pivotal player in creating the plague which Roland Dagget attempted to release. He also ruined many people's lives, including an Olympic Gothamite. Milo created an untraceable steroid/wolf derivative for Anthony Romulus, which resulted in Romulus becoming an actual living werewolf.

Dr. Achilles Milo first appeared in the Batman: The Animated Series episode "Cat Scratch Fever" voiced by Treat Williams. He engineered a plague to infect Gotham's stray pet population for Roland Daggett. This plague also affected Catwoman when her cat Isis attacked her. When Batman stumbled onto this plot to look for the antidote, Milo unleashed an infected dog to attack Batman who got away with the antidote and managed to use some of it on the dog during mid-chase. Dr. Milo was later seen about to drive a truck that will distribute the antidotes. Roland Daggett tells Dr. Milo that he'd better make sure that dog did away with Batman cause if Batman evaded it, Roland instructs Dr. Milo to keep driving as far away from Gotham as the truck he's in will take him. Dr. Milo later reappeared in "Moon of the Wolf" where he was the one responsible for making an untraceable steroid/wolf hormone (when he got the Alaskan Timber Wolves from zookeeper John Hamner) derivative for an athlete named Anthony Romulus, which not only enhanced his athletic abilities, but also turned him into a living werewolf. When Anthony Romulus turned into a werewolf in the climax, Milo then realized too late that he had unleashed a monster he could not control. Milo (who was really a coward at heart) screamed at Romulus that would give him whatever he wanted, but Romulus lost his human reasoning during the transformation and beat up Milo mercilessly like the animal he was transforming into. Dr. Milo was knocked out by Anthony. He was later seen being loaded into the ambulance. When he states that they can't convict him of anything, Commissioner Gordon quotes "Don't bet on it."

Justice League Unlimited
Milo later resurfaced in Justice League Unlimited voiced by Armin Shimerman. He is seen as a member of Project Cadmus. Amanda Waller demoted him to a lower position after a failed warthog experiment in his research of Dr. Kirk Langstrom, the former Man-Bat. He then entered a room where Cadmus was holding Doomsday. After explaining his creation and his fight with Superman, Milo set Doomsday free to take revenge on Waller. When Waller found out that Milo released Doomsday and vowed to "kill Milo," a guard told her that Doomsday beat her to it.