Supergirl Season 1 Episode 16
Kryptonite was created for The Adventures of Superman radio show in June 1943. It was introduced in the comics in Superman #61 (Nov. 1949). In 1940 Superman creator Jerry Siegel wrote an unpublished story about a mineral from Krypton than drained Superman of his powers and gave superhuman powers to humans. Then it was introduced on the radio show. In 1949 it showed up in the comics. The original version of Kryptonite was red, it became its green hue in Action Comics #161 (Aug. 1951). Green kryptonite weakens and possibly can kill Kryptonians.
Red Kryptonite was first appeared in Adventure Comics #252 (Sept. 1958), it weakened Kryptonians like Green Kryptonite. Later it had mutative properties. The effects lasted between 24 and 72 hours usually. Among the transformations were transformation into a dragon, made evil, transformation into a non-powered giant, transformation into a dwarf, transformation into an ant-headed humanoid, transformation into a lunatic, rendered amnesiac, rendered temporarily blind to anything colored green, excessive hair growth, loss of power, gained telepathy, loss of invulnerability along the left side of the body, generation of an evil doppelganger (also used in the movie Superman III), unable to speak or write anything but Kryptonese, growth of extra limbs, loss of balance and manual dexterity, mental transference, rapid aging, and personality alteration. The version seen it this episode was seen in both the Superboy TV series (1988-1992) and the Smallville TV series (2001- 2011). This is the version that turns Kryptonians evil or at least removes their inhibitions.
Other versions of Kryptonite are Gold (strips Kryptonians of the powers), Blue (affects Bizarro and his kind like Green Kryptonite), Silver (causes delusions in Kryptonians), and Black (splits Kryptonians into one good and one evil).
K’Hunds, or as the comics refer to them Khunds, are an alien race in DC Comics. They debuted in Adventure Comics #346 (July 1966). The Khunds have a warlike empire that has fought the Legion of Super-Heroes in the 30th/31 Century multiple times. They are characterized as having magenta hued skin; they are larger, more muscular, and denser than humans.
Matches Malone was created by Denny O’Neil and Irv Novick in Batman #242 (June, 1972), Matches died in an altercation with Batman. He shot at Batman and was killed by the ricochet. Batman assumed his identity and used it to infiltrate Gotham’s underworld. Since Batman used the alias to gain information he could not as Batman. His story was retconned in Batman 588-590 (2001). In the retconned version of the story, Matches faked his death, and then Batman assumed his identity. He came back to Gotham to find who was using his name. This led to his real death.