Jack Nicholson's Joker - https://www.fandom.com/articles/psychology-joker-batman-1989-jack-nicholson
Heath Ledger's Joker - https://www.fandom.com/articles/psychology-joker-dark-knight-2008-batman
Mark Hamill's Joker - https://www.fandom.com/articles/psychology-joker-mark-hamill-batman-animated-series-1992
Joaquin Phoenix's Joker - https://www.fandom.com/articles/psychology-joker-2019-joaquin-phoenix
History of the Batman Podcast: https://podcasts.apple.com/us/podcast/history-of-the-batman/id999987741
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