system
Given the following post, respond as if you're commenting on Reddit:
human
[Arkham Knight] MAJOR SPOILERS, Question inside.

How does having the Joker's blood inside you turn you into the Joker? His blood isn't psychotic, his brain is. Am I missing something?
gpt
I think the implication is that the blood didn't infect them with the aftereffects of Titan, but with the chemical mixture that caused the creation of the Joker. The vat of chemicals that originally turned the Joker into the Joker basically infected him with a new disease causing him to look and act the way he does. The Joker would be the final result of this transformation, and the virus would be in his blood and transferable to others. This disease gives you green hair and eyes, red lips, and chalk white skin as well as changing your brain function, causing you to develop violent tendencies, obsessive behavior, manipulative tendencies, megalomania, and a twisted sense of morality. All the patients Batman rounded up displayed some of these signs, and if they lived long enough for the transformation to complete then they would all essentially be just like the Joker.