Loonatics Unleashed

thumb|right|Original character designs under the initial working title of Loonatics originally named from left: Slick, Spaz, Buzz, Duck, Lexi, and Roadster.

Loonatics Unleashed began as a pitch by Christian and Yvon Tremblay, originally titled The Loonatics using reinterpretations of classic Looney Tunes characters.

The Loonatics were first unveiled to the public in February 2005 with a live-action/animated promotional short that featured the characters with early designs and names such as Zadavia being originally named Maxima.

A petition demanding a change to the Loonatics designs garnered 85,000 signatures.

Ace's original planned name of Buzz Bunny was likely changed due to a similarly named character created by Metin Seven as well sharing the name with a sex toy.

In September 2006, The CW presented its lineup for the 2006–07 Saturday Morning schedule with Loonatics Unleashed returning for a second season, with the press release describing the show as a "breakout hit".