Cuando la infección del virus C se expande por el cuerpo de Derek, entra en la fase dos de la mutación. Durante esa fase, Derek se transforma en una criatura que asemeja aun dinosaurio y su musculatura se densifica. Además, deja de comportarse de forma racional y solo actúa por instinto. Su objetivo es devorar a sus enemigos e incluso se lanza al cielo para atacar al helicóptero que Ada está piloteando.
As the C-Virus infection begins to take root in Derek's body, he enters a stage-two mutation. At this stage, Derek's body resembles a gigantic dinosaur, and his musculature is quite dense. Unlike the stage-one mutation, stage-two Derek behaves instinctually instead of rationally. His driving force is to devour his enemies, and he even goes as far as to leap into the sky and attack a helicopter Ada is piloting.
The Family kept a close eye on Simmons after he was injected with the C-Virus. The FOS was able to intercept part of a message from one of The Family's members during this period.
Derek has lost his mind to the mutation, so all that needs to happen now is for the government to kill him. What was he injected with? It seemed to be based off of the C-Virus, but I've never seen a mutation like that. It must have been something that Ada cooked up with Neo-Umbrella. If we could get a sample of it, we could do some research. I'll have to get some of our people on this.