Originally dubbed "Mr. Hedgehog," this early iteration of Sonic sported significantly more quills than his final design. The additional spikes were intended to emphasize his speed and wild nature, giving him a more untamed appearance. This version laid the groundwork for Sonic's iconic look.
In his alpha design, Tails was originally brown instead of orange. This early version maintained his signature twin tails but with an earthy color scheme. The brown fur was likely chosen to make him appear more fox-like, but was later changed to orange to create a more vibrant and distinctive character.
In his beta design, Knuckles was initially conceived as another hedgehog rather than an echidna. This early version featured quills similar to Sonic's, but with a distinct red coloration. His trademark large fists were present from the start, hinting at his strength and fighting abilities.
Originally named "Terios," this early version of Shadow featured a distinctive yellow scar across his face and a red scarf. His shoes were initially black, contrasting with the eventual hover shoes. This design emphasized his mysterious and edgy nature, setting him apart as a rival to Sonic.
In a whimsical early concept, Dr. Robotnik (later known as Eggman) was envisioned wearing a bee costume. This design featured a round, striped body reminiscent of a bumblebee, complete with wings and a stinger. This playful iteration was eventually abandoned for the more menacing look we know today, but it showcases the creative exploration in character design.