High Quality Content by WIKIPEDIA articles! Rainmaker Entertainment, Inc. (formerly Mainframe Entertainment Inc.) is a Canadian computer animation and design company based in Vancouver, British Columbia and Los Angeles, California. It produces computer animation TV series and movies. They are best known for producing the first ever CGI animated series ReBoot, as well as the acclaimed Transformers spin-off Beast Wars. In recent years they have also become known for producing most of the Barbie (film series) for Mattel.