User blog comment:Thailog/The Master of the Light/@comment-4621444-20111121210757/@comment-34954086-20111123032102

He doesnt leave clues, that's cluemaster (steph brown's dad), and even he had the ocd to leave clues which was eventually cured by Arkham. Riddler left riddles that test Batman's intellect,being one of only men in DC who can compete with Bruce on a mental playing field, they are to manipulate him into Riddlers game.