On Rip Hunter's shelves in his office are the mask of Katanna (A DC comics female oriental superhero) and a wanted poster from the old west. When you zoom in on the poster it's a picture of Jonah Hex (A DC comics western hero).
In the comics, Per Degaton is a time traveling enemy of The Justice Society of America.
It appears that in the Kasnian Conglomerate of 2147, a 'fashion forward' men's jacket is a 2016 men's jacket with the collar turned up and the lapels turned in and ironed.
Ray exclaims "I'm, like, the Wernher von Braun of robots." Wernher von Braun, full name Wernher Magnus Maximilian Freiherr von Braun (23 March 1912 - 16 June 1977) was a German-American aerospace engineer and space architect.
Ray Palmer says his name is "Hannibal Lecter " to Dr. Bryce. Hannibal Lecter is a character in numerous books by Thomas Harris.