User blog comment:LIGHTNING HAWK/new characters/@comment-97.125.225.57-20140324211523/@comment-5367080-20140329094108

The Riddler has worked against Green Arrow in Comics before so that could work and be badass, also it doesn't have to be like Clock King if they make it so the Riddler is one step ahead and always making a joke out of the Arrow and Felicity, given the calibur of the character we could maybe carry that story into a two-parter and end it with Arrow and Felicity at last outwitting him?

As for Hawkman, Arrow is supposed to be a more down to earth realistic show, I know they have Mirakuru and theres a chance of a Lazarus Pit, but I think reincarnated man who can fly, wears Nth Metal Armour, has wings etc. Might be taking it a bit too far for this show :P

As for the Question, that could work! He could appear to help Arrow deal with the arrival of Malcolm Merlyn or Ra's al Ghul if it happens! :)