Primarily a science fiction series, Killjoys follows a trio of hard-living bounty hunters—Dutch (Hannah John-Kamen), Johnny (Aaron Ashmore), and D'avin (Luke Macfarlane).

Bill McGoldrick, Syfy's executive VP of original content was quoted as saying "With exciting space-based action, deep world building, and a standout cast, Killjoys has struck a nerve with viewers and critics alike.

Of the renewal, David Fortier and Ivan Schneeberg, the executive producers of the show, said, "We couldn't be more excited to bring back Killjoys and its stellar cast to audiences across the U.S. We look forward to working with the team at Syfy for a thrilling second season.

"[8] Starting with the fourth season, Adam Barken became the showrunner of the series, with Michelle Lovretta remaining with the production as an executive producer and writer.

Killjoys has just the right mix of guns, high-tech knives, assassins, cage fights, missions to hostile planets, dark secrets, tiny robot weapons and general space headbutting thrills to be the perfect treat for Friday nights.Noting others' negative reviews, she went on to state "[w]e don't need every television show to be True Detective or even Battlestar Galactica.