At one point when Detective Quentin Lance is talking to Thea Queen and Roy Harper he sarcastically calls them "wonder twins". The Wonder Twins are teenage super-powered siblings who are part of the DC Universe, the same fictional universe in which Green Arrow also exists.
Al Sapienza who played Edward Rasmus in this episode also played Joe West's partner in the pilot episode of The Flash which is part of the same universe.
J. August Richards who plays Mr. Blank in this episode also played Deathlok in Agents of S.H.I.E.L.D. (2013), a show set in the Marvel Cinematic Universe.
J. August Richards, who plays Mr. Blank in this episode, also played an attorney in the tv show Angel. In the 5th season, due to a new twist for his character Charles Gunn, he became an attorney for an evil corporation although his lawyer character on Angel was not he himself evil.
Guest star Al Sapienza also starred in a TV movie titled 'Home Invasion' (2012).