History MythologyGag / SonicTheHedgehog22022

** Another one of Robotnik's signature works appears: a [[VideoGame/SonicTheHedgehog2 Death Egg Robot]], [[AttackOfThe50FootWhatever now a hundred times bigger]]. Size-wise, it resembles [[https://sonic.fandom.com/wiki/Titanic_Monarch_Zone the Titanic Monarch]], the colossal robot that serves as the final Zone of ''VideoGame/SonicMania''. The concept of a bigger version of the Death Egg Robo comes from the Sonic and Knuckles Death Egg Act two boss the Kyodai Eggman Robo.

* Sonic is briefly shown snowboarding down an icy mountain, as he did in Ice Cap in both ''VideoGame/Sonic3AndKnuckles'' and ''VideoGame/SonicAdventure''.

** [[spoiler:Also, the Master Emerald being created from the Chaos Emeralds is similar to the origin of the pre-Super Genisis Wave Master Emerald being formed from eleven Chaos Emeralds.]]

* Once Stone brings up a instruction manual to Robotnik's giant mecha, it is designed as a typical manual for a Usefulnotes/SegaGenesis game, checkered backgrounds and such.
* In the Junior Novelization, Knuckles at one point refers to Sonic as a “Child of Mobius”, with Mobius being name of the planet the characters live in American media.

* Sonic often calls Robotnik "Eggman" after the villain' s return. While it was always "Dr. Eggman" in Japan, it was initially an insult in the US release of ''Sonic Adventure'' before it was universally retconned and established into his official name/nickname post-''Sonic Adventure 2''.
* The Master Emerald's role is similar to what is described by Tikal, an ancestor of Knuckles in the game, as conduit of sorts to control the Chaos Emeralds' power. The movie version somewhat has the same purpose, as the Echidna warriors "forged" the seven Chaos Emeralds into the Master Emerald. It also allows the wielder to turn their thoughts into power.[[note]]'''Tikal's Prayer''': ''The servers are the 7 Chaos. Chaos is power... Power enriched by the heart. The controller is the one that unifies the Chaos.''[[/note]]

* When Sonic is taking a bath, he plays with the bubbles to form a beard that makes him resemble Uncle Chuck from ''WesternAnimation/SonicTheHedgehogSatAM.''

* The unamed Echidna Warrior using the Master Emerald as a conduit of power is very similar to Enerjak from the Archie comics, even having a similar appearance.

* Knuckles smashes through a truck of [[VideoGame/SonicTheHedgehog4 Splash Hills]] Spring Water.

* The unamed Echnidna Warrior using the Master Emerald as a conduit of power is very similar to Enerjak from the Archie comics.

* [[https://static.wikia.nocookie.net/sonic/images/d/d4/Sonic_2_movie_sticker_waiting.gif This Gif]], released as part of the film's marketing, features Sonic impatiently tapping his foot with the text "I'm Waiting" behind him in reference to both an idle animation from the Genesis games and his catchphrase from WesternAnimation/AdventuresOfSonicTheHedgehog.

* The Master Emerald's role is similar to what is described by Tikal, a descendant of Knuckles in the game, as conduit of sorts to control the Chaos Emeralds' power. The movie version somewhat has the same purpose, as the Echidna warriors "forged" the seven Chaos Emeralds into the Master Emerald. It also allows the wielder to turn their thoughts into power.[[note]]'''Tikal's Prayer''': ''The servers are the 7 Chaos. Chaos is power... Power enriched by the heart. The controller is the one that unifies the Chaos.''[[/note]]

** [[spoiler: Like in the game, TheStinger reveals that Project: Shadow is reported to have existed 50 years ago. The file containing his existence was buried in Robotnik's database as, in the game, a descendant of his is responsible for the project. While Shadow's purpose in the movie universe is currently unknown, the game's Shadow was sealed in a capsule on a remote island for 50 years when G.U.N tried to capture him.]]

* While Sonic turns Super in ''Sonic 2'' early if he collects all seven Chaos Emeralds and 50 rings, he quickly goes Super via Master Emerald during ''S3&K'''s final battle. In the movie, the Master Emerald shatters during the final battle, but manages to wield the power of the seven Emeralds inside.

* Sonic often calls Robotnik "Eggman" after the villain' s return. While it was always "Dr. Eggman" in Japan, it was initially an insult in the US release of ''Sonic Adventure'' before the name was universally retconned and established post-''Sonic Adventure 2''.

** [[spoiler: Like in the game, TheStinger reveals that Project: Shadow is reported to have existed 50 years ago. His existence was buried in Robotnik's database as, in the game, a descendant of his is responsible for the project. While Shadow's purpose in the movie universe is unknown, the game's Shadow is sealed in a capsule on a remote island for 50 years when G.U.N tried to capture him.]]

* [[spoiler:Knuckles warning Tom and Maddie that Sonic is not who he is anymore in his super form is likely a nod to how Super Sonic is portrayed in ''ComicBook/SonicTheComic''.]]

* The masked people who attack Robotnik at the start of the film could be a reference to the [[VideoGame/SonicRiders Babylonians]], considering the seemingly advanced tech and the bird-like masks (the leader’s mask in particular resembling Jet).

* Before Wade captured Agent Stone, the latter played with a program to dress up Robotnik. One of the outfits is identical to the one that the Classic Robotnik wore.

* On the topic of the climax, [[spoiler:the final battle between Super Sonic and the Death Egg Robot brings HEAVY reminders of Super Sonic's first appearance in ''Anime/SonicX'', including him catching Eggman's giant robot's punch and destroying its hand (Albeit in opposite order), and completely blitzing the machine before it goes down.]]