I wanted to write this since last week but I kept forgetting about it. Tommy Merlyn being Prometheus is a popular fan theory that many like me hope is real but last week's episode of Arrow crushed that theory once and for all. If Tommy was Prometheus he would be angry at Oliver for letting Laurel be the BC and her dying that would also make sense for why Prometheus would want to break out Black Siren because she looks like the woman he once loved but Prometheus attacked BS and threatened to kill her instead of keeping her beside him like Zoom did with Killer Frost. As sad as I am to say it Tommy Merlyn isn't Prometheus it is impossible at this point. I just hope Prometheus is someone else like Roy or even Malone and not just Claybourne jr.