History Recap / SonicTheHedgehogSatAMS1E01HeadsOrTails

** Sally has [[EarlyInstallmentCharacterDesignDifference pink fur and black hair]], rather than the brown fur and hair she has in the rest of the show.

** Both Knothole and Robotropolis (including Robotnik's war room) look different than they do in later epsiodes with former having its residents living in hollowd-out trees as opposed to wood huts.

** Tails acts more like a four-year old than a ten-year old. It's also implied in spite of that, he's a lot more involved in the freedom fighter's missions than he was later in the series with Snively identifying him as a freedom fighter & saying he often accompanies Sonic and him being somewhat involved in the defense of Knothole against the buzz bombers. The motherly relationship he has with Sally is also downplayed with him simply refering to her as "Princess Sally" as opposed to "Aunt Sally".

** The [=SWATBot=]s are shown with their comic-based gray coloring instead of their stealthy black coloring as well as a personality (two are shown laughing at Snively after an accident.)

** Tails acts more like a four-year old than a ten-year old, and [[KiddieKid acts way younger than his real age]] (it's also implied in spite of that, he's a lot more involved in the freedom fighter's missions than he was later in the series with Snively identifying him as a freedom fighter & saying he often accompanies Sonic and him being somewhat involved in the defense of Knothole against the buzz bombers).

Thirteenth ''WesternAnimation/SonicTheHedgehogSatAM'' episode in release order, after "[[Recap/SonicTheHedgehogSatAMS1E02SonicPastCool Sonic Past Cool]]."

* DoesThisRemindYouOfAnything: Due to this episode coming out during hype of the subject, the way Sonic describes "The Big City" to Tails is similar to describing a [[TooSmartForStrangers Stranger-Danger aesop]], or on the other hand, street safety.

** Tails acts more like a four-year old than a ten-year old (it's also implied in spite of that, he's a lot more involved in the freedom fighter's missions than he was later in the series with Snively identifying him as a freedom fighter & saying he often accompanies Sonic and him being somewhat involved in the defense of Knothole against the buzz bombers)

* {{Catchphrase}}: "Is there an echo?" Sally says it twice in the episode, indicating it was intended to one for her.

Thirteenth ''WesternAnimation/SonicTheHedgehogSatAM'' episode in release order, after "[[Recap/SonicTheHedgehogSatAMS1E02SonicPastCool Sonic Past Cool]]".

** The scene in which Sonic and Tails encounter Muttski uses a music cue taken directly from Adventures of Sonic the Hedgehog. Music from AoStH isn't used elsewhere in the series.

** It also contains an example of EarthDrift. Sonic mentions [[Music/GunsNRoses Axl Rose]] while playing the guitar, and the show takes place on Mobius in the 33rd century. No more references to real life places or people are made after this, beyond a joke in "Sonic Converison" where Robotnik makes reference to "Topeka" but then immediately muses he doesn't know where or what it is.

* Catchpharse:"Is there an echo?" Sally says it twice in the episode, indicating it was intended to one for her.

** Tails acts like a four-year-old (the age of his other cartoon counterpart at the time) instead of his eight-year-old self.

* ChuckCunninghamSyndrome: This episode features Sonic's pet dog Mutsky, who was roboticized by Robotnik. He is never seen or mentioned again.

Thirteenth in release order, after "[[Recap/SonicTheHedgehogSatAMS1E02SonicPastCool Sonic Past Cool]]".

** Rotor has a different, goofier looking design. Franchise/ArchieComics would keep that design for their adaptation.