since film is a different medium, good comic qualities may not carry over.
Riddler was a very minor Batman villain until the tv show. Frank Gorshin's portrayal made Riddler legendary and he's become one of the top five Batman enemies since.
Lex Luthor in the comics is a charismatic, powerful and formidable entity. Jessie Eisenberg's portrayal of him in Dawn of Justice makes him look like a warped geek with too many toys. not just the actors fault; looks like he was playing the type of Luthor they wanted. (I thought Michael Rosenbaum's young Luthor in Smallville was great.)