• Stephen Amell stars in The CW superhero series 'Arrow.'

Stephen Amell stars in The CW superhero series 'Arrow.' (Photo : YouTube/Television Promos)

New details and spoilers for "Arrow" season 5 will feature new clues on Prometheus' identity and The Question appearing in the show.

It seems that new clues on the possible identity of "Arrow" season 5's latest big bad Prometheus has been revealed as four characters are being hinted to be the ruthless vigilante in the show.

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According to Screenrant, these four characters that are hinted to be Prometheus include Slade Wilson/ Deathstroke (Manu Bennett), Tommy Merlyn (Colin Donnell), Billy Malone (Tyler Ritter) and Adrian Chase/Vigilante (Ryan Segarra). Slade as Prometheus could be a possibility since he has the biggest grudge against Oliver Queen/Green Arrow (Oliver Queen). The problem however, is that Deathstroke will be returning to the show's 100th episode and the chances of him being Prometheus is likely too convoluted.

Tommy Merlyn as Prometheus could be a big possibility as his death impacted Oliver's life the most in protecting Star city. But with "Flashpoint" affecting the "Arrow" TV series it seems that Tommy being Prometheus happen. However, Donnell is currently in another show called "Chicago Med" as a regular and it may depend on his schedule.

Felicity Smoak's (Emily Bett Rickards) new love interest Detective Brian Malone could also be Prometheus as his presence in the show will spell bad news for Olicity fans as Oliver will not just compete with Malone for Felicity's affection, but also for his life as well. Malone as Prometheus could will likely take everything away from him including Felicity.

Lastly, Star City's new district attorney Adrian Chase is also being theorized as Prometheus and could be a result of the character being wracked with guilt, not always mentally stable, and eventually suicidal. It is theorized that Chase could have a split personality, while it is also possible that Chase will not become Vigilante at all, but that the writers chose to use this name to throw fans off the Prometheus scent.

In other news, executive producer Marc Guggenheim teased another DC character coming to "Arrow" season 5 as he tweeted a photo of Hub City in the show.

Hub City is the comics is the home of Victor Sage a.k.a. The Question, a reporter who wears a mask that wipes out his features and gives him a distinctly creepy faceless appearance as he battles criminals who have escaped justice.

It is unknown what kind of relationship he has on Oliver in the show, but the showrunners could likely use him as the driving for Oliver to become a vigilante and fight fot justice in order to save Star City from corruption, Cinemablend reported.

"Arrow" season 5 returns on Wednesday 8pm on the CW Network.