Warning: Major SPOILERS for the Crisis on Earth-X crossover
The identity of Earth-X's Prometheus from the Arrowverse's Crisis on Earth-X crossover has been revealed. Following the moderate success of last year's four part crossover, The CW's Arrowverse is back together once again starting tonight. Kicking off with Supergirl and Arrow, the universe's biggest crossover event is underway and vastly different than the previous one. This time, all four episodes of each show will largely focus on the crossover and the invasion of Nazi heroes from another Earth.
The arrival of these villains is giving many of the usual leading heroes a chance to turn heel and play evil versions of themselves, while Tom Cavanagh has the chance again to suit up as Reverse Flash. However, there are several other villains for the regular Earth-1 heroes to battle. One of them is Prometheus, but this time it isn't Josh Segarra's Adrian Chase.
As revealed in the middle of tonight's two hour launch of the event, Earth-X's Prometheus is none other than Tommy Merlyn. Longtime viewers of Arrow will instantly recognize the return Colin Donnell as Oliver Queen's best friend. Even with Tommy coming from a different Earth, he confirms that relationship is the same on both Earths.
The return of Tommy Merlyn didn't last very long however, as he activated a hidden cyanide capsule and killed himself in the process. The decision came after Team Arrow captured him and serves as a brief callback to those that have watched this universe grow from the beginning. It marks Donnell's first appearance on the show since a season 3 flashback scene, which makes this his first "actual" appearance since the end of season 1.
The reveal that Donnell was the one behind Prometheus' mask doesn't only add a nice reveal for the crossover, but also leans into previous speculation that he was actually the real Prometheus last season. Thanks to the Arrowverse making a habit of resurrecting people, fans have been waiting for the day that Tommy is brought back into the fold. At this point, it seems increasingly unlikely, but it would have been a big reveal for last season if it had wound up being true.
With both Earth-1 and Earth-X Tommy now dead, this could very well be the final appearance Donnell makes in the Arrowverse. Thanks to the endless possibilities of the Crisis on Earth-X crossover, Donnell may not be the only familiar face to pop up. There are surely other surprises in store, so stay tuned to Screen Rant and tune in to the crossover itself to see how it all plays out.
Crisis on Earth-X continues on Tuesday @8pm with The Flash and Legends of Tomorrow on The CW.
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