A drug baron who wields tremendous influence over a small South American nation. According to intelligence, he has been in contact with a former Umbrella researcher. The tyrannical methods he uses to assert his power, such as violence and assassination, are in stark contrast with his devotion to his daughter Manuela, who is afflicted with a terrible disease. He administered the T-Veronica Virus in a desperate attempt to cure her, but was later forced to harvest the organs from a number of innocent girls in order to suppress the results of this mistake.
One of the main selling points of The Darkside Chronicles was the ability to play as Leon and Krauser, the partners who would later become enemies in RE4. A number of great details are shown in the game such as their firm handshake and the story behind how Krauser's left arm ended up being depicted in RE4. While the heart-wrenching story of Javier and Manuela is perhaps the focus of the game, the finer points of Leon and Krauser's relationship make it a must-play for any fan of the series.