DIC Entertainment planned a second season for Adventures of Sonic the Hedgehog but the second season didn't come around due to the fact that DIC was busy working on the second season for Sonic, o Ouriço (1993).
This series was spun off of the original concept for Sonic, o Ouriço (1993) during pre-production. Bruce Shelly and Reed Shelly were involved with Len Janson in the early development of the American Broadcasting Company (ABC) series, which originally had a more humorous tone (as seen in concept artwork featured in Fleetway's "Sonic the Comic"). The project diverged into two series early on, with Len Janson ultimately taking the ABC series in a more serious direction.
Jim Cummings was the voice of Robotnik in the original pilot film for this series. He would go on to do a dark interpretation of the character in Sonic, o Ouriço (1993).
The series has a very similar look to Ren & Stimpy (1991). Many of crew members from that series worked on this show.
Dr. Robotnik was originally conceived as television's sexiest fat man. The animators weren't up to the challenge, but it didn't stop them from slipping in a lot of shirtless scenes and scenes that draw too much attention on Robotnik's rear end. This also includes the bikini pic from Hero of the Year (1993).