User blog:Тостер/Prometheus: Unusual Suspects

While everyone is wondering who Prometheus is and main fan suspects are Tommy Merlyn, Quentin Lance, Roy Harper and Billy Malone I seriously doubt anyone of them. So I would like to share a list of possible candidates which fit following criteria:
 * Met Oliver Queen and/or The Hood 5 to 6 years ago somewhere near Season 1, maybe earlier, maybe later.
 * Has at least vague motive.
 * Would have a reason to conceal the identity.

And the candidates are:
 * Malcolm Merlyn - not that it's very likely, but still: why no one is considering the possibility?.. There should be the reason why he's yet to pop up on the show.
 * Kyle Reston - a very interesting theory proposed by MADMIKE400. Reston actually fits into criteria nicely: he has a few good reason to hate both Oliver Queen and his alter ego, he was already quite tough to begin with and training could have made him quite a formidable warrior, he fits Prometheus origin of a child of a pair of criminals (moreover, his father was killed), he has a few reasons to conceal the identity (being a criminal known both to underworld and police) and finally he could have been inspired by the arrow Oliver put in him to switch guns for melee weapons and skill.
 * Teddy Reston - less of a possibility, but fits as well.
 * Leonid Kovar - character who is yet to appear on the show but will probably do eventually. May easily blame Oliver for the downfall of his father, Konstantin Kovar.
 * Drakon - remember Constantine Drakon being one of the first people Oliver encountered and killed as The Hood? Always wanted for some relative of his to appear and be a little be closer to source material (despite I liked late Darren Shahlavi as Drakon).