 Features the first animated appearance of the following characters:  Hawk and Dove, Captain Atom, Question, Vigilante, Black Canary,  Wildcat, Booster Gold, Amazo, Metamorpho, Vandal Savage, Blackhawk,  Sgt. Rock, Easy Company, Mongul, Star Saphire, Huntress, and Despero  among others.  The episode "Fearful Symmetry" features a reporter in a bar wearing  a light blue suit and a straw hat. He is an obvious tribute  paranormal investigator and reporter Karl Kolchak from the cult  classic _"Kolchak: The Night Stalker" (1974)_ (qv) TV show.