What a Cartoon! premiered the first Johnny Bravo short on March 26, 1995. After a full series was greenlit by Cartoon Network, the shorts were later incorporated as the first episode of the show's first season, which premiered on the channel on July 7, 1997.
The Johnny Bravo cartoons aired on What a Cartoon! and then became part of the first episode of the show "Johnny Bravo" when it premiered on Cartoon Network in July 1997.