コンラート・ファイト
↑ Entertainment Weekly writer Frank Lovece official site: Web Exclusives — Bob Kane interview "[The Joker] looks like Conrad Veidt — you know, the actor in The Man Who Laughs [...] Bill Finger had a book with a photograph of Conrad Veidt and showed it to me and said, 'Here's the Joker'."
↑ A brief history of the Joker - Los Angeles Times
↑ 1932年のドイツ映画「F.P.1 antwortet nicht」の英語版。日本ではドイツ版のみ公開された。邦題は「F・P一号応答なし」https://www.imdb.com/title/tt0023996/