It has already been confirmed that a secret character will be appearing at the end ofSonic the Hedgehog 3, and here are the 10 biggest theories for who it could be. After Tails was introduced in the post-credits scene ofSonic the HedgehogandShadow was introduced in the post-credits scene ofSonic the Hedgehog 2, it wasn’t a stretch to assume that the third movie would continue this trend. Luckily, there has already been confirmation that a secret character will be appearing at the end ofSonic the Hedgehog 3, and there are tons of options.
Sonic the Hedgehogdirector Jeff Fowler recently talked toEWabout the upcomingSonic the Hedgehog 3, and the filmmaker made some interesting comments regarding the end of the third film. Although the movie isn’t out yet, Fowler has already confirmed thatSonic the Hedgehog 3will feature another new characterin the same vein as Tails' and Shadow’s previous reveals in the movie series. While he didn’t hint at who would be coming, this confirmation has led to all kinds of theories about who could show up inSonic the Hedgehog 3.

“It’s fun to see the fan debates online about who’s coming up next, who’s going to be teased at the end of the film. We have a lot of the same conversations. We’ve all got our favorites on the filmmaking side, and we’re all making great cases for ‘it should be this one or that one.’ It is fun to keep that anticipation. This movie is no different in terms of teasing new characters.”
10Metal Sonic
Dr. Eggman’s Sonic Competitor
One of the most obvious choices for who could appear at the end ofSonic the Hedgehog 3andset up a fourth movie is an iconic video game villain known as Metal Sonic. Fans of the franchise have been hoping that Metal Sonic would appear in aSonic the Hedgehogmovie since the first film, with Dr. Eggman’s robotic version of the titular blue blur being the series' most popular villain outside of Eggman himself.
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Now that theSonic the Hedgehogmovies have taken on Shadow’s story inSonic the Hedgehog 3,the Metal Sonic storyis the most well-known arc that the movies still haven’t covered. Metal Sonic is a popular enough character that general audiences would get excited to see him inSonic the Hedgehog 4, and even if some audience members don’t know who he is, the premise of the character is simple enough that they could immediately get the gist in aSonic the Hedgehog 3post-credits scene.

9Amy Rose
Another One Of Sonic’s Friends
While Tails and Knuckles are Sonic’s best friends, there is still another friend that is mysteriously missing from theSonic the Hedgehogmovies: Amy Rose.Amy is the pink hammer-wielding friend of the Sonic trio, and she is the most popularSonic the Hedgehogprotagonist that hasn’t been introduced yet. Amy has appeared in all kinds of games, and adding a female protagonist toSonic the Hedgehog 4would be a smart move.
There have already been lots of theories thatAmy Rose will appear inSonic the Hedgehog 3, with some believing that she will appear even earlier than a post-credits scene. However, having Amy pop up in a post-credits scene would be exciting enough that it would kick off the hype cycle forSonic the Hedgehog 4, with Amy being one of the best picks for the next live-action movie.

8Rouge The Bat
A Theif With Connections To G.U.N.
With the introduction of Shadow the Hedgehog inSonic the Hedgehog 3, the live-action movie series seems to be really leaning into theSonic Adventurestorylines. Because of this, there is another obvious character who could appear at the end ofSonic the Hedgehog 3: Rouge the Bat. Rouge is a major player in theSonic Adventuregames, with her being a master thief who sometimes acts as a hero and sometimes acts as a villain.
Rouge’s connections to Shadow the Hedgehog and G.U.N. makes her a prime candidate for aSonic the Hedgehog 3introduction, with the movie already setting the stage for her introduction. Rouge the Bat would make a fun addition to the story of a fourthSonic the Hedgehogmovie, as while she probably wouldn’t be the main antagonist, having a wild card in the mix could make the story more dynamic.

7Chaos
The Main Antagonist Of Sonic Adventure
Shadow the Hedgehog probably won’t be the villain ofSonic the Hedgehog 4, and after already tackling Eggman storylines in the previous two movies,it is doubtful that they would make Jim Carrey’s character the main antagonist again either. IfSonic the Hedgehog 4wants to introduce an all-new major threat to the movies, then the best choice is Chaos.
Chaos is the main villain ofSonic Adventure, with the dangerous deity having all kinds of connections to the Chaos Emeralds and theSonic the Hedgehogfranchise’s lore.Sonic the Hedgehog 3has already teased the Chao, which are less-evolved stages of Chaos, meaning that the film could be teasing Chaos' proper introduction. Since Chaos comes from theSonic Adventureseries, it only makes sense for the monster to appear afterSonic the Hedgehog 3’sSonic Adventure-heavy story.

6Silver The Hedgehog
A Hedgehog From The Future
Another popular character who could be introduced in the post-credits scene ofSonic the Hedgehog 3is the time-traveling antagonist Silver the Hedgehog. Despite making his debut in the critically panned 2006 reboot ofSonic the Hedgehog, Silver has remained a mainstay of the franchise since his introduction, with him appearing in all kinds of spinoff video games and otherSonic the Hedgehogprojects.
The easiest way to set Silver up would be to have Team Sonic do something inSonic the Hedgehog 3that puts the timeline in jeopardy, although they aren’t aware of it. Then, Silver can travel back in time at the end ofSonic the Hedgehog 3, with him appearing in the modern day to hunt Sonic down. This would be a fantastic story forSonic the Hedgehog 4, relying on one of the lesser-known games for its story.

5Blaze The Cat
An Extra Dimensional Flame Princess
If Silver the Hedgehog does appear atthe end ofSonic the Hedgehog 3, he probably won’t be alone, with it being likely that Blaze the Cat will appear right alongside him. In 2006’sSonic the Hedgehog, Blaze is a futuristic royal in Silver the Hedgehog’s dark future, with her appearance being a bit mysterious. Her relationship with Silver could be expanded upon inSonic the Hedgehog 4, clearing up these long-held fan misconceptions.
In her debut game,Sonic Rush, however,Blaze the Cat was an extra-dimensional guardian of the Sol Crystals, with her not having a connection to Silver in this story. Adapting this story would be a way forSonic the Hedgehog 3to introduce Blaze without needing Silver, separating the movie series from the notoriously badSonic the Hedgehoggame.

4Cream The Rabbit
A Hero With Connections To The Chao
With teases of the Chao inSonic the Hedgehog 3, it only makes sense for the live-action movie series to also introduce Cream the Rabbit. Cream is a young girl who is often seen tending to the Chao, although she has gotten into the action alongside Amy and Big the Cat inSonic Heroes. Cream would be an interesting addition to the live-actionSonic the Hedgehogmovie series, with her acting as another protagonist in the ensemble cast.
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While Cream the Rabbit’s introduction would be exciting and makes a lot of sense considering where the story ofSonic the Hedgehog 3is going, it would be strange to introduce her in a post-credits scene. Cream isn’t as popular as some of the aforementioned characters, meaning that she wouldn’t get the same level of excitement as Amy or Metal Sonic. However, she is still a distinct possibility forSonic the Hedgehog 3’s post-credits scene.

3E-123 Omega
Another Dangerous Eggman Invention
IfSonic the Hedgehog 3’s post-credits scene is going to introduce a robotic creation of Dr. Eggman as its secret villain, Metal Sonic is the obvious pick. However, there is another option: E-123 Omega. E-123 Omega is one of Dr. Eggman’s most dangerous robots, with him being introduced as a playable character in theSonic Adventureseries of video games.
While E-123 Omega doesn’t have much of a story,he is a recognizable villain in the video game franchise, with his addition making sense if the movies want to move Eggman back to the role of main antagonist. E-123 Omega would be a fun villain for a potentialSonic the Hedgehog 4, and many fans would be excited to see his introduction.
2Iblis
A Powerful God-Like Entity
TheSonic the Hedgehogseries is surprisingly full of god-like entities that have served as the main antagonists of video games, with Iblis being another candidate forSonic the Hedgehog 3’s post-credits scene.Iblis is a demonic entity who acts as one of the main villains of the 2006Sonic the Hedgehogreboot, and a character of this scale needs to be teased in a post-credits scene before making his proper debut.
The stage has already been set for Iblis' introduction, and surprisingly, it was in theKnucklesspinoff show.Knucklesintroduces a power known as the Flames of Disaster, something that also happens to be the nickname for Iblis. This could be a tease of Iblis' introduction, with Knuckles now having a connection to the character.
1Black Doom
A Villain With Connections To Shadow
Shadow the Hedgehog will presumably be a major part of theSonic the Hedgehogmovies going forward, meaning that one of the most exciting post-credits scenes would introduce Black Doom. Black Doom is another powerful entity that could serve as the villain ofSonic the Hedgehog 4, and if he is going to be introduced, it would be at the end ofSonic the Hedgehog 3.
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Black Doom is an alien antagonist who also has connections tothe origin of Shadow the Hedgehog, with him acting as the main villain in theShadow the Hedgehogvideo game. Black Doom has become a recurring rival of Shadow and Sonic, and after his role has been expanded in the recently releasedSonic X Shadow Generations, it would make sense for him to appear inSonic the Hedgehog 3.
Sonic the Hedgehog 3
Cast
Sonic the Hedgehog 3 reunites Sonic, Knuckles, and Tails as they face a formidable new adversary, Shadow. With Shadow’s unprecedented powers posing a significant threat, Team Sonic seeks an unexpected alliance to thwart his plans and safeguard the planet.