Daily Sonic Character Facts (ARCHIVE)さんのイラストまとめ

@cokeinbed Archie is known for little errors like that. Maybe official artwork would have been better.

In an early story draft made for western audiences, Sonic was originally planned to be from Nebraska.

While his main series counterpart is actually a woodpecker, Bean is a duck in the Archie comic series. This is probably to tie in the fact of Bin (the main character from the arcade game, Dynamite Düx) being his father.

There is a genome named in honor of Sonic.

When Sonic the Hedgehog (1991) was being developed, Sonic originally had a love interest named Madonna. She was later introduced as an agent working for G.U.N. in the Archie comics.

According to Sonic Runners, Knuckles' treasure hunting ability is referred to as his "treasure sense." The game also implied that he is able to pick up the scent of treasure and sniff his way to it.

@PremuimNawor

In an interview, Jason Griffith revealed that he originally auditioned for the part of Chris Thorndyke in Sonic X, but was instead cast as Sonic.

Even though he is an echidna, one of the lyrics to Unknown from M.E. (Sonic Adventure version) refers to him as a porcupine.