Question: how many seasons of sonic underground are there
Answer: It is the third Sonic the Hedgehog animated series , and also the last one produced by DiC ; it follows a main plot separate from all other Sonic the Hedgehog media , where Sonic had two siblings , Sonia and Manic , that were collectively part of a royal family who were forced to separate from their mother , Queen Aleena , upon Robotnik 's takeover of Mobius due to a prophecy told by the Oracle of Delphius .