'Arrow' Season 5 Theory: Prometheus Is Villainous Result Of 'Flashpoint', Resurrected Oliver Queen Ally From Season 1? [SPOILERS, POSSIBLE PLOT DETAILS]

"Arrow" has had its share of truly dangerous villains including Deathstroke, Ra's al Ghul and Damian Darhk. However, there is a lot of mystery surrounding "Arrow" Season 5's Big Bad Prometheus. Is it possible that the masked baddie is actually a result of "The Flash" Season 3's "Flashpoint" storyline? Is Prometheus actually Oliver Queen's former ally from way back in the first season?

'Arrow' Season 5 Theory: Is Prometheus Actually Oliver Queen's Best Friend Tommy Merlyn?

It's difficult to stay dead in the "Arrow" universe. Some characters have faked their deaths (Malcolm Merlyn, Roy Harper) while others have been resurrected through the Lazarus Pit (Thea Queen, Sara Lance). With so many ways to revive a fallen character, it wouldn't be a surprise if Oliver Queen's best friend gets raised from the dead to become a brand-new villain. The theory of Tommy being Prometheus has proven to be a popular one among "Arrow" Season 5 fans (via ComicBook).

But how exactly does Tommy Merlyn get resurrected into a masked baddie with a bone to pick with Oliver Queen? Some believe that Malcolm Merlyn may have resurrected his son through the Lazarus Pit and trained Tommy to hate Oliver for not saving him. However, there is also another way that "Arrow" Season 5 could deal with Tommy's possible return. Is Prometheus another result of Barry Allen's decision to change the past in "The Flash" Season 3's "Flashpoint" storyline?

Did Barry Allen Accidentally Create 'Arrow' Season 5's Prometheus In 'Flashpoint'?

"The Flash" Season 3 might be done with the "Flashpoint" storyline, but that doesn't mean that the consequences of Barry Allen's actions have been erased. It has already been revealed that John Diggle and Lyla Michael's daughter has been changed into a son after Barry changed the timeline. So is it possible that Barry also created Prometheus in "Arrow" Season 5? Did "Flashpoint" somehow save Tommy Merlyn from death but turned him against his own best friend Oliver Queen?

"Penance" is the fourth episode of "Arrow" Season 5. It will air on The CW on October 26.