In the TV Guide magazine for San Diego Comic Con, Arrow producer Wendy Mericle shared some info on the main villain of Season 5.
While not giving away his identity, the villain will have deep roots as he has been plotting revenge against the Arrow since Season 1 (when the Arrow was know as the Hood).
[They’re] somebody Oliver unwittingly created in Season 1 when he was a killer in a hood. This guy is going to be collateral damage who lost someone to the Hood and [has] spent the last several years training and plotting for revenge. He will be a true dark mirror to Oliver Queen.
If the villain turns out like Mericle is describing him, it appears that Arrow Season 5 is shaping up to be better the Seasons 3 and 4.
In the interview, Mericle also revealed that the words Laurel Lance whispered to Oliver Queen on her deathbed will be revealed in the Season 5 premiere. She also said the decision to kill off the Black Canary will “make much more sense” in Season 5.
Arrow Season 5 premieres on October 5, 2016 on The CW.SuperFable