Among the promotional material Mattel produces to bring attention to the Monster High dolls, the most prominent product is the Monster High cartoon series. Released as a mix of many webisodes of a few minutes long and a small amount of TV specials of around an hour, the cartoon is the primary medium through which new characters and accessories are brought to the audience's attention. The Flash-animated material was produced by W!LDBRAIN during 2010-2012 and is produced by Six Point Harness since 2013, though Top Drawn Animation has been continuously hired by both companies for supportive work after it took over from Caboom. Meanwhile, the CGI-animated material is produced by Nerd Corps Entertainment and DHX Media. Sound for the entire series is done by Salami Studios.