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Upon Ray Palmer's arrival Caitlin and Cisco have an exchange when they see something flying in the air. First asking if it's a bird, and then a plane, and Felicity replies that it's her boyfriend. This is a reference to the iconic Superman phrase, referencing Brandon Routh's former title role as Superman in the 2006 film adaptation Superman Returns.
e isso aconteceu no único episódio de flash em que Ray Palmer (Atom) apareceu, s01e18, All Star Team Up