WARNING: This article contains SPOILERS for Sonic the Hedgehog 3.

Sonic the Hedgehog 3seems to have set up another exciting sequel. After Sonic and his friends prevented Shadow the Hedgehog and Gerald Robotnik from destroying the Earth,Sonic the Hedgehog3’s post-credits scenesdepicted Sonic encountering both Amy Rose and Metal Sonic. On top of that, Shadow is shown to have survived the destruction of the Eclipse Cannon, laying the foundation forSonic the Hedgehog 4and creating several thrilling possibilities for its story.

Amy and Metal Sonic’s debut alone implies a lot about the story audiences will see inSonic the Hedgehog 4.However, Sonic’s video game lore and theending ofSonic the Hedgehog 3give even more hints as to what direction the filmmakers will go with Sonic’s fourth cinematic adventure. Combined with the success of the franchise’s third film in theaters, all these sequel possibilities have madeSonic the Hedgehog 4the most highly-anticipatedSonicfilm yet.

A group of Metal Sonics standing in a line Sonic the Hedgehog 3

10G.U.N. Created Metal Sonic

G.U.N. May Have Become An Even Greater Threat To Sonic

Since their debut inSonic the Hedgehog 2, G.U.N. has been more of a hindrance to Sonic than a helpful ally. Specifically, after Sonic was accused of murdering Commander Walters, the former and his friends were pursued by G.U.N. soldiers inSonic the Hedgehog 3. After seeing the destruction that Shadow unleashed, G.U.N. may have all the more reason to fear what kind of devastation Sonic and fellow aliens could unleash with their powers.

While building a blue robot hedgehog may not be part of G.U.N.’s brand and be more Robotnik’s style, they do have the reason and the resources to create the Metal Sonics.

Metal Sonic in Sonic the Hedgehog 3

As a result,G.U.N. could’ve created Metal Sonic as a contingency plan to combat any perceived alien threats. However, it wouldn’t be a surprise if the Metal Sonics were another case of A.I. gone rogue. While building a blue robot hedgehog may not be part of G.U.N.’s brand and be more Robotnik’s style, they do have the reason and the resources to create the Metal Sonics.

9Metal Sonic Is From The Future

Metal Sonic May Continue To Invoke Terminator As The Franchise’s Next Villain

The way Metal Sonic appeared out of nowhere to kill Sonic inSonic the Hedgehog 3seems toresemble how the T-800 appeared inTheTerminatoras it traveled back in time. This cinematic parallel created in the thirdSonicfilm implies thatSonic the Hedgehog 4will be heavily inspired by theTerminatorfranchise and depict Metal Sonic as a time-traveling robot assassin.

Sonic The Hedgehog 3 Proves The Franchise Learned A Valuable Lesson After Sonic 2

Sonic the Hedgehog 3 spent less time on human characters like Wade and Wachowskis, and it was arguably a better film than Sonic 2 as a result.

Since Metal Sonic appeared with an army of robot duplicates, it is also possible that Sonic’s robot doppelgängers are responsible for the destruction of human civilization in the future, similar to Skynet and its army of killer robots in theTerminatorfranchise. By presenting theMetal Sonics as the source of Earth’s destruction,Sonic the Hedgehog 4would justify presenting these robots as the franchise’s next world-threatening antagonists after Shadow the Hedgehog.

Shadow touches the glass of his incubation tube in Sonic the Hedgehog 3

8Ivo Robotnik Takes Over Future Earth

Doctor Eggman May Have Cheated Death Again

Though Ivo Robotnik was last seen in the exploding Eclipse Cannon, it’s hard to believe that the film’s writers would get rid of such a popular character just like that. Given that the Cannon was powered by Shadow’s Chaos energy, which allowed him to time travel in the games, it could’ve been blown Ivo through time when it exploded. He could thus have ended up in a future where Sonic and his friends are no longer alive, allowing him to conquer the entire planet undeterred by building an army of Metal Sonics.

Sonic The Hedgehog 3 Box Office Breaks 22-Year Jim Carrey Record

After 22 years, Sonic the Hedgehog 3 has just broken an impressive Jim Carrey record in what is sure to mark its last major box office milestone.

Unused concept art forSonic the Hedgehog 3revealed onXdid depict Ivo ruling over a dystopian world with Metal Sonic at his side, implying the plan to haveJim Carrey return as Robotnikin the sequel. While Ivo tried to sacrifice himself to save the Earth, he did so out of sheer necessity. He made it clear in his farewell speech to Stone that he still wanted to rule the Earth, but he couldn’t do that if it was destroyed. If he does end up back on Earth in the future, he could actually fulfill his life’s ambition.

Robotnik’s goodbye message in Sonic the Hedgehog 3

7Sonic Will Learn How To Time Travel

After Traveling Through Space, Sonic May Travel Through Time

Sonic was no stranger to time travel stories in his video games.Sonic CDsaw the blue hedgehog using Time Stones to run through history to defeat Dr. Eggman and rescue Amy Rose. Sonic also traveled through time using the power of the Chaos Emeralds in 2006’sSonic the Hedgehoggame.

Should Sonic end up having to face a villain from the future inSonic the Hedgehog 4, it is likely that he will have touse his Chaos energy to race through time to protect the world once againin his next film. Doing so would allow the film’s writers to create a loose adaptation ofSonic CDfeaturing Sonic, Amy, and Metal Sonic.

Jim Carrey looking shocked as Robotnik in Sonic the Hedgehog 3

6Shadow Has The Chaos Emeralds

The Ultimate Life Form May Return Sooner Than Expected

If Sonic does need to travel through time inSonic the Hedgehog 4, it is possible he will need the power of the Chaos Emeralds to do so. However, Shadow was the last person using the Emeralds as he was protecting the Earth while in his Super state.

Since Shadow survived the events of the third film, it is possible that the Emeralds are still with him, giving Sonic a reason to seek him out. The black hedgehog was one of the popular aspects ofSonic the Hedgehog 3, so this may give the writers a reason to capitalize on his character and have him appear in the fourth film.

A close up of Sonic running at a high speed in Sonic the Hedgehog 3

5Amy Rose Is From The Future

Sonic The Hedgehog 4 Could Make A Huge Change To Amy’s Character

If Metal Sonic traveled from the future to kill Sonic, chances are thatSonic’s ally Amywould have come from the future as well to save him. There was no other way that she would have known Sonic would be there and that his life would be at risk. Though Amy is known for having a strong romantic interest in Sonic in the games, the film’s version of her could have protected Sonic because she needed him to help defeat the Metal Sonics in her time.

Sonic The Hedgehog 3 Teases Amy Rose Is Just As Powerful As Shadow Thanks To Minor Detail

Sonic the Hedgehog 3’s post-credit tease gives a small hint that Amy Rose might rival the most powerful character in the Sonic universe.

Amy being from the future would make her character and origins very different from her video game counterpart, who is from the same time as Sonic. However, this change to Amy’s character would make it easier to connect her story with that of a time-traveling Metal Sonic.Amy’s origins in the games are also very ambiguous, which will make it easier to adapt her character forSonic the Hedgehog 4.

Amy Rose holds her hammer over her shoulder in Sonic the Hedgehog 3’s mid-credits scene

4Amy Rose Is Working With Silver The Hedgehog

A Time-Traveling Amy May Already Be Working With A Superpowered Hedgehog

Another character who could debut inSonic the Hedgehog 4’s story is Silver the Hedgehog. In the games, this psychokinetic warrior travels back in time from a dark future to rewrite history and protect his world. If the Metal Sonics did travel back in time to kill Sonic, the latter’s fourth film could have them be responsible for the destruction of Silver’s future. For this reason,Silver could time-travel as well to fight alongside Sonicagainst this robotic threat.

Genius Sonic The Hedgehog 3 Theory Alters Amy Rose & Metal Sonic’s Debuts & Sets Up Another Major Character’s Introduction

One genius theory changes the debut of Metal Sonic and Amy Rose in Sonic the Hedgehog 3’s mid-credits scene and could tease another major character.

Should Silver appear inSonic the Hedgehog 4, it is also possible that he is working with Amy Rose to fight against the Metal Sonics and the one who is controlling them. This kind of relationship wouldn’t be anything new for Silver and Amy. 2006’sSonic the Hedgehogsaw the duo team up when Silver travels back in time to the present day, so the next Sonic film could pay homage to the game while presenting a unique relationship between Amy and Silver.

Amy Rose in Sonic the Hedgehog 3

3Amy And Metal Sonic Are From Another Universe

Worlds May Collide In Sonic The Hedgehog 4

The concept of the Multiverse has become a common plot device in popular media, andSonic the Hedgehog 4may have found a way to implement it as well. OneReddittheory suggests that the Chaos energy released by the Eclipse Cannon’s explosion inSonic the Hedgehog 3ripped open a hole into another universe.

Amy and Metal Sonic may have actually originated from an alternate reality, and this explosion allowed them to travel from their world to Sonic’s world. It could’ve even sent Robotnik to this parallel universe, giving him the opportunity to take over its version of Earth.

Silver the Hedgehog from a cutscene in Sonic the Hedgehog (2006)

2An Alternate Version Of Eggman Sent Metal Sonic

Ivo Robotnik May Appear In Sonic 4, Just Not The Original One

If the Eclipse Cannon did open the door to another universe inSonic the Hedgehog 3, it is possible that this parallel world would have its own version of Ivo Robotnik. Perhaps this other Robotnik succeeded in defeating Sonic years ago and had harnessed his power to conquer Earth with an army of Metal Sonics.

Following the events of the thirdSonicmovie, this other Eggman may now have set his sights on this newly discovered dimension and sent the Metal Sonics to kill its version of the Blue Blur. Such a story could allow Jim Carrey to play Robotnik again without ruining the sacrifice the original Ivo made at the end ofSonic the Hedgehog 3.

Metal Sonic has lighning coming out from behind him next to Amy Rose who holds her hammer over her shoulder

1Sonic Already Time Traveled In The Third Film

Sonic May Have Secretly Unlocked A New Power

While it is possible that Metal Sonic and Amy traveled back in time, Sonic may have actually been the one who did all the traveling. It is possible that Sonic ran so fast during his race with Tails and Knuckles that his Chaos energy opened a portal through time similar to DC’s Flash. As a result, Sonic could have unintentionally appeared in a future version of Earth, and his sudden appearance there could’ve caught the attention of both Amy and the Metal Sonics.

Considering Sonic’s youth and reckless nature, it wouldn’t be a surprise if he accidentally unlocked a new power during one of his runs.

The post-credits scene inSonic the Hedgehog 3doesn’t explicitly state whether Sonic is still in the present day. However, the severed moon in the sky makes it clear that the scene takes place after the Eclipse Cannon’s destruction. Considering Sonic’s youth and reckless nature, it wouldn’t be a surprise if he accidentally unlocked a new power during one of his runs.