Roy "Arsenal" Harper is officially back for Arrow Season 6, and he's not looking so good. New photos from the episode "Doppelganger" show Roy injured, with Thea coming to his rescue. Roy was last seen in Season 4, where he came back to Star City for a single episode, and Thea has been out of the field since the bombing on Lian Yu back at the end of Season 5.
In the photos, Roy sits on a chair, wounded, as Thea comes to his rescue. When The CW announced Roy's return, the network noted that it would end with long-lasting consequences for both him and Thea, which shouldn't come as a surprise, since they dated in Season 2.
According to the episode description,
ROY HARPER RETURNS — Oliver (Stephen Amell) and Thea (Willa Holland) are shocked to hear that Roy Harper (guest star Colton Haynes) 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 (Katie Cassidy) makes a shocking decision. Kristin Windell directed the episode with story by Christos Gage & Ruth Fletcher Gage and teleplay by Speed Weed (#615). Original airdate 3/8/2018.
Starring Stephen Amell as the Emerald Archer, Arrow airs Thursdays at 9pm ET/PT on The CW. The series also stars Emily Bett Rickards, David Ramsey, Willa Holland and more.