Johnny Bravo's character in Van Partible's unreleased "Mess O'Blues" short was originally envisioned as an Elvis Presley impersonator. Aaron City, where Johnny Bravo lives, was named after Presley's middle name, Aaron.
During the second and third season runs, segments were written from outlines instead of scripts. The producers, writers, director, and storyboard artist would sit and "beat-out" all of the jokes while the artist "roughed-out" drawings on post-its. This was intended to shorten the time back and forth between writer, producer, director, and artist and cut down on miscommunication.
According to creator Van Partible, Johnny Bravo's name originated from Adios, Johnny Bravo (1973), where Greg was nicknamed "the next Johnny Bravo". The name was also derived from Partible's middle name, Giovanni Bravo, which is also an Italian name for Johnny.
In Hip Hop Flop/Talk to Me, Baby/Blanky Hanky Panky (1997), one character extends his middle finger at Johnny (a signal often referred as "flipping the bird"). Many people have denied this because the character has four fingers on his hand throughout most of the episode. However, if you look carefully when the character closes his hand, the animators quickly drew a fifth finger. Another supporting piece of evidence, usually the scene is cut out when aired on television. However, the unedited scene was released on the DVD box set, and very briefly on Netflix.