Question: John Willis, nicknamed Bac Guai John in Cantonese, or White Devil, is an American mobster linked with the Chinese Mafia, is also called which name, used by John Willis, nicknamed Bac Guai John in Cantonese, or White Devil, is an American mobster linked with the Chinese Mafia?
Sentence (from "John Willis (gangster)"): Willis claims to have been the only white person within Chinese organized crime, an assertion backed by FBI agent Scott O'Donnell, who stated he has "never seen" a case like that of Willis.
Relevant evidence: No