The meteorite is made of Nth metal, a material native to the planet Thanagar and home to Hawkman and Hawkwoman in the comics. Their maces are also made from the same material which can negate gravity.
Vandal Savage's alias in the '50s is Curtis Knox. Dean Cain played a Dr. Curtis Knox in Cure (2007), who was also an immortal and thought by fans to be Vandal Savage.
Hall H, where the Nth metal-affected teenagers are being held, is mentioned by several characters. It is a nod to the real life Hall H, the largest hall at the San Diego Convention Center, where the annual San Diego Comic Con is held. Hall H is normally where the largest events for Comic-Con are held, generally presented by DC and Marvel Comics.
During the course of their conversation in the diner, Jackson, Stein and Sara talk about prejudice in the 1950s, specifically the advantages of being white (mentioned by Jackson, who is black), male (mentioned by Sara, who is female), and straight (mentioned by Sara as she nods toward Stein). While Stein is a straight character, the nod is a discreet reference to the actor portraying him, Victor Garber, who is gay.
Franz Drameh (Jefferson Jackson) calls Jock #1, Biff when they first meet in the diner.
"Why don't you do yourself a favor Biff? Keep walking before you really, really embarrass yourself."
Jefferson is calling him the character of Biff Tannen from the movie link=tt0088763], who was the bully of the movie. Most of that movie was set in the 1950's, the same as this episode.
"Why don't you do yourself a favor Biff? Keep walking before you really, really embarrass yourself."
Jefferson is calling him the character of Biff Tannen from the movie link=tt0088763], who was the bully of the movie. Most of that movie was set in the 1950's, the same as this episode.