Yeah, Roy is the only one out of the three who hasn't gotten the virus. He's managed to escape every time. Benjamin and Argus weren't so lucky. Benjamin goes completely insane, but Argus dies before he goes insane.
This is simply beautiful, the shading and all the details are fantastic! I think that this question I'm having could be answered by reading your drawings' descriptions, but is there a website or anything where Roy's story could be read, perhaps? It's just so interesting!