Taneleer Tivan was a character created by what two people?
Elders of the Universe The Elders of the Universe are a fictional group of supervillains appearing in American comic books published by Marvel Comics. The Collector was the first Elder to appear, and featured in "Avengers" #28 (May 1966), but the idea that he was a member of a group known as the Elders was not introduced until "Avengers" #174 (August 1978). The character was created by Roy Thomas and Sal Buscema.
The Reign of the Superman "The Reign of the Superman" (January 1933) is a short story written by Jerry Siegel and illustrated by Joe Shuster. It was the first published use by the writer/artist duo of the name "Superman", which they later applied to their archetypal fictional superhero. The title character of this story is a telepathic villain rather than a physically powerful hero. (Although the name is hyphenated between syllables due to it being broken between pages on the story's opening spread, it is spelled "Superman" in the magazine's table of contents and in the story's text.)