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 the Hedgehog (1993).
This series was spun off of the original concept for Sonic the Hedgehog (1993) during pre-production. Bruce Shelly and Reed Shelly were involved with Len Janson in the early development of the 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.
In the Sonic games, there are seven Chaos Emeralds, all of which are multi-coloured. In the four-episode story-arc in this show (comprising "Blackbot the Pirate", "Hedgehog of the Hound Table", "Robotnik's Pyramid Scheme" and "Prehistoric Sonic"), there are four Chaos Emeralds, all of which are green and of various shapes, scattered throughout various points in history, and each give a specific power: invisibility, invincibility, immortality and the power to give life.
The 65 episodes of this show (not including Sonic Christmas Blast (1996)) ran on weekdays at the same time as the 13 episodes of the first season of Sonic the Hedgehog (1993) were being shown on Saturday mornings.
A pilot film for The Adventures of Sonic The Hedgehog was made that never aired on television. Some scenes of it ended up the series included the attempted crushing of Sonic by Robotnik that was played at the end of every episode during the credits.
In The Mobius 5000, the show Grounder and Scratch watch on TV of Robotnik trying kill Sonic was from the original unaired pilot film. That was the only time in the series that Robotnik's character design remained truly faithful to Milton Knight's model sheet.
The series was later rebooted as "Sonic the Hedgehog" was taken in a darker direction and the characters Scratch, Grounder and Coconuts were dropped. In that series, Sonic and Princess Sally Acorn lead rebels against Dr. Robotnik. Jaleel White and Jim Cummings returned to provide the voices of Sonic and Dr. Robotnik.
The Christmas special, Sonic Christmas Blast (1996), used many elements from Sonic the Hedgehog (1993), including SWATbots and the appearance of Princess Sally (although a much different Sally to the one in the other cartoon).