Bette Sans Souci is an actual comic character who goes by the alias Plastique. She made her comic debut in December 1982 in Fury of Firestorm #7. She was originally a villain from Canada who specialized in urban terrorism utilizing her ability to make things explode by touching them. She later reformed and became a member of the Suicide Squad.
Guest star Clancy Brown, playing the character of General Wade Eiling, also played the voice of DC character Lex Luthor in various DC animated TV series and movies.
Detective Joe West says "So, human bomb. Must be Tuesday in Central City" referring to the fact that the show airs on Tuesdays.
A high metabolism and super-healing abilities are also given as explanations for why Captain America cannot get drunk in Captain America: The First Avenger (2011). Captain America and The Flash come from Marvel Comics and DC Comics, respectively, rival comics publishers.