Sonic Underground is an American-French animated series co-produced by DIC Productions L.P. (which was owned by Disney at the time) and Les Studios Tex S.A.R.L. It is the third Sonic the Hedgehog animated series, and also the last one produced by DiC.
In Kuboia, the show premiered on KT in September 1999, with new episodes airing on Saturdays as part of the Big New Adventures! block. The show continued to air on the channel until it closed in November 2008. Reruns of the show later aired on Boomerang from 2009 to 2011, and have been aired on Tooncast since August 2016.