Gersch was a Soviet scientist and the leader of the Ascension group. Gersch oversaw Project Thunder and worked with Yuri Zavoyski on the Gersch Device (Project Mercury) before he transferred Yuri to rocket research. During Yuri's descent into madness, Gersch noted his increased aggression towards the other scientists, as well as the fact that he muttered to himself. He then confronted Yuri when he found him working on the Gersch Device, and threatened to have him permanently removed. Yuri tricked Gersch into activating the Device, which sucked him into the black hole; the triggering of the Device is possibly responsible for the appearance of Zombies in the cosmodrome. He was originally thought to be dead, but was in fact trapped by the Casimir Mechanism. After being freed by Tank Dempsey, Nikolai Belinski, Takeo Masaki and Edward Richtofen, it is unknown what became of him.