Narcotics Anonymous is a non-profit fellowship or society of men and women for whom drugs had become a major problem.
Jor-El (also known as Jor-L or Jordan Kent in the Golden Age) is a fictional character appearing in titles published by DC Comics. A Kryptonian, Jor-El is Superman's biological father, the husband of Lara, and a leading scientist on the planet Krypton before its destruction. He foresaw the planet's fate but was unable to convince his colleagues in time to save the inhabitants.
Dr. Curtis Knox is played by Dean Cain, who played Clark Kent/Superman in Lois and Clark: The New Adventures of Superman. Dr. Curtis Knox's initials are C.K, just like Clark Kent's. This is an homage to Dean Cain's role as Clark Kent on Lois and Clark (on that show, C.K is what Jimmy Olsen called Clark Kent ). Knox's powers and abilities are similar to those of Vandal Savage, infamous DC Comics immortal, who often used aliases.