"Doppelganger" is the fifteenth episode of the sixth season of Arrow, and the one-hundred-thirtieth episode overall.


Oliver and Thea are shocked to hear that Roy Harper is back in Star City. However, when they discover the circumstances of Roy's return, Oliver and Thea realize that Roy is in trouble and jump in to save him. Black Siren makes a shocking decision.[1]




  • Diaz refers to Thea dressing up like Will Scarlet, a character of English folklore. While a reference to Speedy's wearing red as opposed to Green Arrow's green, Will Scarlet is prominently known as the most skilled swordsman of the Merry Men, a nod to the fact that Speedy carries a sword.
  • Felicity makes mention of "puffing and puffing and blowing [...] firewalls down", referencing an infamous line from the fable The Three Little Pigs.
  • This is the first episode of Season 6 where Rene is absent and overall the third episode he's been absent from the show since his first appearance.
  • The title refers to Black Siren pretending to be Laurel's Earth One counterpart.
  • This is the first episode to feature Colton Haynes as Roy Harper in 2 years since "Unchained".


  1. Listings - ARROW on The CW - The Futon Critic