Simmons spontaneously switches between mutations as he fights Leon and Helena to the Quad Tower , where he finally falls to his death .
Simmons is later betrayed by Carla Radames and infected with the C - virus .
Simmons spontaneously switches between mutations as Simmons fights Leon and Helena to the Quad Tower , where he finally falls to his death .
Simmons is later betrayed by Carla Radames and infected with the C - virus .