original three "Koala Brothers" characters first appeared here as supporting characters. In the 1990s, the book and exhibit's creator Greg McKee revised the concept as an animated TV show proposal called "Echidna Airways" which circulated at Cannes. Greg pitched the proposal to the producers of this show, who ultimately decided to develop their own version of the premise instead. The animation style itself is reminiscent of the popular children's series Bob the Builder with production credits evidently shared between the two. Archival footage of the Echidna Airways characters and flying machines is viewable here: Ownership and distribution The show was purchased by Spellbound Entertainment and was pre-sold to CBeebies for a 2003 delivery. Spellbound would continue to sell the series worldwide until filing for liquidation in 2013. David Johnson, the show's creator, would purchase the rights to the series in February 2014 under a new joint-venture company called Koala Brothers Ltd. Union Media was signed as the new distributor for the series. Characters All the characters are anthropomorphic native Australian animals mainly speaking with correct accents, with the notable exceptions of Archie the Crocodile, who speaks in a British accent and Penny the Penguin, who only communicates through penguin sounds. Main Frank the Koala (voiced by Keith Wickham) is the male pilot of the airplane. Frank has demonstrated excellent skills in tennis and was the only member of the community able to defeat Archie, though Frank admitted it was probably just luck. Frank also fostered an interest in pottery at one point but did not have any great artistic ability. Buster the Koala (voiced by Rob Rackstraw) sits behind Frank in the airplane and uses his telescope to spot friends in need from the air. Buster is always willing to provide a pep talk or a hug to his friends. Buster speaks more softly than Frank and has a small tuft of hair on the top of his head. Buster loves to bake, especially butter cookies. Jonathan Coleman is the Narrator. Supporting Mitzi the Possum (voiced by Lucinda Cowden) almost singularly wears flip flops exposing her toes (which implies an attachment though it is not brought up in stories) along with thick-rimmed glasses. Mitzi lives in part of the Koala Brothers' homestead made over as her living quarters and is young and impressionable, often relying on the Koala Brothers to keep in line with her perfection-seeking impulses. Mitzi can get