Leech Zombies
Leech Zombies were a creation of former Umbrella scientist Dr. James Marcus, who had a decidedly unhealthy passion for leeches. Using his research on the Progenitor Virus, Dr. Marcus gave his leeches an almost human-level intelligence, but also made them somewhat larger than the average leech, and monumentally more aggressive.
The leeches, controlled by a "queen" leech of Marcus' own invention, were so well coordinated that they would fool their victims but forming themselves into a humanoid shape to resemble an ordinary, run-of-the-mill zombie (all of these "leech zombies" resembled Dr. Marcus himself, it should be noted). However, when shot, they would disintegrate into a swarm of leeches and attack the shooter en masse.
These dangerous creatures were faced by STARS Bravo Team member Rebecca Chambers and escaped convict Billy Coen, and were used by Dr. Marcus to exact his revenge against a trainload of Umbrella employees on their way to the Spencer Estate.
