In the Arkham game series, Joker’s "memories" become a literal infection in Batman’s mind due to a blood transfusion and fear toxin, forcing Bruce Wayne to relive the villain's distorted perspective. "Joker's Memory" in Pop Culture
There is a recurring plot point regarding a memory chip containing the Joker’s consciousness used to "resurrect" him years after his death. Jokers Memory
The most widely accepted (yet still unverified) memory features a struggling comedian who agrees to a heist as the Red Hood to support his pregnant wife, only for it to end in a chemical vat. In the Arkham game series, Joker’s "memories" become