User blog comment:Spirits of nature/I Know who Prometheus is/@comment-3423279-20170227050342

It's Eddie Thawne, he was sent to Earth-2 in the year whatever year it was before the year Ollie's boat blew up and came to hate him, but since he couldn't kill Oliver Queen 2 on account of boat explosion he began training and went back to E-1 after Zoom's defeat.

He then went on a crusade against Oliver.