28. Sonic the Hedgehog (ABC, 1993-1994)
Oddly enough, two different Sonic-themed cartoons were on-air at the same time during the early '90s. The Adventures of Sonic the Hedgehog was lighthearted and playful, but Sonic SatAM, as this version was commonly called, aired on Saturday mornings and stuck with a darker theme much different from the popular video games.
The fact that Sonic was voiced by Steve Urkel (Jaleel White) already makes it a classic, but sick animation and surprisingly strong character development really drive the point home.