In the comic books, Siobhan Smythe is the supervillain Silver Banshee.
A bounty hunter is mentioned when Kara, J'onn and Alex discuss the kidnapping of the Fort Rozz escapee. This could be a reference to the interstellar bounty hunter Lobo.
When Hank calls Alex's team, he uses the call signs "Greyhound" and "Trap One." These were the call signs used by U. N. I. T. in DOCTOR WHO (1963).
"Truth, Justice and the American Way" is the title reference to what Superman is known for protecting.
Luzano mentions that he is from Starhaven. In the comics, this the name of the home planet of Dawnstar, a member of the Legion of Super Heroes.