Conversation so far:
What is DC Universe?
The DC Universe is the fictional shared universe where most stories in American comic book titles published by DC Comics take place.
Was the DC Universe successful?
Yes
Are there any other interesting aspects about this article?
Catwoman made her debut as the Cat in Batman #1, and her real name is Selina Kyle.

Question: Who is Selina?
Self-contained rewrite: Who is Selina Kyle?