"Falling Skies" alum Ryan Robbins has joined the upcoming fourth season of "Arrow" as a recurring villain named Conklin, who will appear alongside Baron Reiter (Jimmy Akingbola) in Oliver Queen's flashback sequences.

According to Variety, Robbins' Conklin will be a "sadistic and ruthless" member of Shadowspire. In the comics, Conklin appeared as a minor villain in a Martian Manhunter backup tale in "Detective Comics" #287, so it seems as though "Arrow" will reinvent the character, who will debut in the third episode of the season.

Shadowspire, on the other hand, has a much longer comics history. First appearing in "Deathstroke" #53, the organization aided South American drug cartels by supplying them with weapons, transportation, technology, intelligence and more. In the comics, Reiter's Shadowspire associates include Steelhawk, Kodrescu, Mourn I and Mourn II, though it's unclear if Conklin will take on any of these monikers.

Starring Stephen Amell, David Ramsey and Emily Bett Rickards, "Arrow" season four is scheduled to debut Wednesday, Oct. 7 at 8 pm EST on The CW.