Ok this is what I remember. In the late 90s there was 2 totally different Sonic The Hedgehog cartoons and in both Sonic was voiced by Steve Urkel himself. One was on ABC Saturday mornings and it was kinda dark. It had Sonic and some girl leading a bunch of freedom fighters against RoBotNic who had a bunch of robot soldiers. Tails was in it but, he didn't do much of anything.
The second Sonic was in syndication and was way lighter and funnier in tone. In this one it's just Sonic and Tails fighting against RoBotNic, who hasn't taking over the town in this cartoon. And RoBotNic had two robots, one was a chicken and the was a green robot with wheels. And then he had a monkey on that was always cleaning the house.