is the co-protagonist of Resident Evil Zero along with Rebecca Chambers. He is first mentioned in a police report filed by Chambers that can be found in the Nintendo 64 version of Resident Evil 2, foreshadowing the events of the prequel. A former Second Lieutenant in the United States Marine Corps Force Reconnaissance, Billy is sentenced to death by a military court for massacring 23 people in murky circumstances during a mission in Africa. Billy's flashbacks imply he is innocent and the victim of a cover-up. He escapes en route to his execution and seeks refuge in the Ecliptic Express, a stranded train, where he meets Rebecca Chambers. The two form an alliance in order to survive, using their talents to discover the Umbrella Corporation's secrets. Both characters are monitored by the Queen Leech-James Marcus hybrid, who sends various creatures to subdue them. After revealing the details of his demise, the hybrid Marcus fully mutates into the Queen Leech. In the final battle sequence, Billy and Rebecca destroy the Queen Leech by exploiting its vulnerability to sunlight. Rebecca allows Billy to escape, believing his claims that he is innocent and telling the authorities that he subsequently perished in the Arklay Mountains after their encounter. Billy also appears in The Umbrella Chronicles. Jake Muller Voiced by (English): Troy Baker (RE6) Voiced by (Japanese): Daisuke Namikawa (RE6) Motion capture: Troy Baker, Daniel Southworth (stunt double) Jake Muller appears as one of three main protagonists in Resident Evil 6. He is the illegitimate son of the Albert Wesker; it is believed that Wesker was not aware of his son's existence, as Jake's mother left shortly after being impregnated by him. Jake later works as a freelance mercenary in order to support his mother, whom dies of an unknown chronic disease shortly after Jake receives money for her treatment. Jake was caught up in an act of bioterrorism while operating in anti-government operations in the fictional Eastern European republic of Edonia. His mercenary comrades are infected with the C-virus, but Jake's specialized blood resists the infection. Soon after, he meets US government agent Sherry Birkin – whose father, William Birkin, was coincidentally Albert's research partner. Sherry and Jake take part in the subsequent battle between the Bioterrorism Security Assessment Alliance and the mutated mercenaries. With his blood resistant to the downside-effects of mutagenic viruses like his father, Jake also inherited several of his father's