Conversation so far:
what was the Pre-Crisis Comet?
Comet the Super-Horse was Supergirl's pet horse and, while in his human form as Bill Starr, her brief boyfriend
what comic books does Comet appear in?
Comet was introduced in the Superboy story in Adventure Comics #293 in February 1962.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about this article on Comet?