Executive Meddling: Sonic Christmas Blast was originally intended to be titled An X-Tremely Sonic Christmas as a tie-in with the game Sonic Xtreme, but the game's cancellation forced it to be titled for Sonic 3-D Blast instead.
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 (and, of course, the completely unnecessary bikini pic from "Hero of the Year.")
Fake American: Everyone in the show except Sonic and Tails has a Canadian or British voice actor.
Hey, It's That Sound: The episode "Grounder The Genius" features two of the actual sound effects from the Sonic games[1] in one part of one scene; specifically, the "jump" and "ring" sound effects.
The Mario sound effects later appear in "Attack of the Pinball Fortress"[2].
The "derez" sound effect from Tron can be heard in "Robitnik's Rival".
The "spider" sound effect from Centipede can be heard in "Coachnik".
Hey, It's That Voice!: If you grew up in the 1990s with "TGIF" night on ABC, you will recognize the voice of Sonic as Steve Urkel. Older viewers — particularly the parents of the viewing demographic — will recognize the voice of Dr Robotnik as the late singer Long John Baldry who was also the voice of Captain Capacitor, the Crimson Binome.
In season 1 Hack and Slash were played by Phil Hayes and Gary Chalk just like Scratch and Grounder. Both were duos of inept villainous robot henchmen.
Coconuts was Ian James Corlett, who was Dr. Wily in Captain N the Game Master, and the main character in the Mega Man Ruby-Spears cartoon and the Ocean dub's version of Goku in Dragon Ball Z.
Irony as She Is Cast: Robotnik sings much worse than his voice actor, Long John Baldry.
Playing Against Type: Coconuts' voice actor Ian James Corlett is also the voice of Mega Man in the Ruby-Spears cartoon.
Playing Knuckles the Echidna in DiC's later cartoon Sonic Underground didn't help either.
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