Cross-Dressing Voices: Jaleel White as Sonia. Oddly though, if one watches an episode of Sonic Underground, you can tell the voice Jaleel White uses when providing the voice of Sonia sounds inconspicuously identical to the high-pitched voice White used from his other (more) famous role as Steve Urkel.
What Could Have Been: More episodes of this show were planned, but never went beyond the planning stages. We can only wonder how it could have ended. Ian Flynn, current head writer of Archie Comics' Sonic the Hedgehog, has stated that he would like to write a conclusion in comic form (helped by the fact that the cartoon was established to be in the comic series' Multiverse in an earlier story), but Executive Meddling means that there are some issues are going to have to be dealt with first.