The second half of the "Arrow" Season 5 will be premiering two weeks from now and the viewers of the show has seen a lot of surprises. When the show returns, Oliver and the rest of the team Arrow still has to deal with this season's main villain Prometheus, whose identity still remains as a mystery to them.

TV Line released photos for "Arrow" Season 5 including a revelation of a possible connection of Nyssa's half-sister Talia' Al Ghul to the unidentified villain Prometheus, as stated by executive producer Wendy Mericle. "Is a gift that keeps on giving for the rest of the season," says Mericle about the "Big bad", Prometheus.

The producer also said that among the new faces will be Talia al Ghul where in the DC Comics is the daughter of the international terrorist Ra's al Ghul and was briefly married to Batman. Talia is set to play a "crucial part" in uncovering the Prometheus' mystery, actress Lexa Doing from Stargate SG- 1 will play the DCTV version of Talia in Arrow according to Comic Book.

However the series has not revealed any details yet how she will be a part of Prometheus mysterious identity but it is speculated that she will be a factor on how Prometheus gained his combat skills. It is also possible that she has a grudge with Oliver Queen and plots revenge in the form of Prometheus.

So far the only thing that we know about Prometheus's identity Is that he the son of Justin Claybourne where the Green Arrow killed him in season 1 because he was included in "the list" from Oliver's father. Meanwhile when "Arrow" Season 5 returns on January 25, 2017, SCPD Detective Tina Boland will create a connection with Oliver Queen where she has also been "through her own hell, her own sort of 'island.'"