On 60s TV, Cesar Romero cackled as this criminal; in 2008, Heath Ledger gave a startling film performance
[DOC] [TLE] The Dark Knight - Page 19 - Unofficial Academy Awards Discussion Board [PAR] Jul 16, 2008 ... Cesar Romero's interpretation of the character (in the '60s TV series) was that of 
a deadly prankster.