I looked for the truth. Found it. Didn't like it. Wish to hell I could forget it. Alex Mercer... This city suffered for his mistakes, for what he did at Penn Station. And whoever he was - that's a part of me. Cause when I close my eyes, I see the memories of a thousand dead men, screaming as I take their lives. Moments I'll relive forever. What have I become? Something less than human. But also something more.

-Alex Mercer

I was Alex Mercer—geneticist at Gentek. I worked on things I shouldn’t have. Blacklight... the virus that changed everything. When I realized what Gentek and Blackwatch were planning, I stole a sample. They caught up to me in Penn Station. I was shot and killed. That should’ve been the end. But the virus escaped. It consumed me, rebuilt me, and brought me back. Except I wasn’t human anymore—I was the virus. Wearing Mercer’s face, holding his memories.

I woke up with fragments of who I used to be, hunted by Blackwatch, surrounded by the infection spreading across New York. I fought back. I consumed anyone in my way, pulling their memories into mine, piecing together the truth. By the end, I learned the reality: Alex Mercer died in that subway. What’s left is me—the Prototype.