For those unfamiliar with the series, this is probably the most-well known part about it—I mean, it's kinda hard not to raise an eyebrow when you say, "Oh yeah, and Super Sonic is fucking evil in this universe."
One of the many unique aspects of this version is that Sonic doesn't need all of the Emeralds to transform. It's actually explained in the series, though I don't recall just how well it was done.
Y'all remember the good ending from Sonic 1? The one where all of the Chaos Emeralds spin around in the air, before disappearing and leaving some flowers behind?
Yeah, that happened in StC… and that's because there were only six Emeralds. Without the seventh, the Emeralds weren't able to be properly controlled, and they eventually vanished in a burst of Chaos energy.
Really, this is all you need to know about StC Super Sonic.
He's basically their version of the Hulk. If he's in a life-threatening situation, he will transform, go after the person that pissed him off in the first place… and then go after any and everyone else in the area.
You know that old bit of advice that kids used to get for if an atomic bomb dropped? That's basically what you need to do is Sonic transforms into Super: crawl into a ball, and kiss your arse goodbye.
Super Sonic disappeared for a long time, and was eventually found by a character called Ebony the Cat, who was completely unaware of the true nature of Super. This was because he had actually suffered amnesia, and because his powers were slowly fading, he was dying.
In the final original arc of the series (pre-Sonic the Comic-Online, the fanmade continuation), Sonic and the Freedom Fighters were dealing with Chaos, who they had no idea of how they were going to stop.
Ebony has the idea that since Chaos is made of Chaos energy, that maybe Super can absorb that to get a second lease on life. Naturally, all of the Freedom Fighters—who are fully aware of what Super is like when he's at 100%—is like, "wtf bitch are you crazy you can't do that. o_o;"
However, Chaos was already Perfect at that point, so they really didn't have any choice. Super fought Perfect Chaos, sucked all of his energy and left him in his original form… and then reverted to being completely batshit evil, because of course refilling all of his energy would cause his memories to return.
He immediately started going after Sonic and co, and so while the two were tussling, Ebony used her wizard powers to go, "Yeah, fuck that shit; I'm fusing the two of you back together."
Thus, Perfect Chaos was defeated, the (external) threat of Super Sonic was eliminated and kept in check once again, and the series ended on a high note.
—well, the original series, anyway; Super appears several more times in StC-O. That first image that I posted? It's when he's fighting Shadow in the Sonic Adventure 2 adaptation. (It's also one of my favorite images of him, full stop.)
• Sonic is a colossal dick to Tails. This was the writer's attempt to inject their version of "'tude" into Sonic, modeled after characters such as the UK version of Dennis the Menace (no relation to the U.S. strip).
• Tails sometimes had his own adventures in another Zone entirely. In these, he actually lied about his hero status, saying that he was the main hero of Mobius, and Sonic was his sidekick.
It seems that towards the end of the series' run, the lead writer wanted to do more with this, as Tails ponders if he should tell everyone the truth. However, that was the last solo Tails adventure in the original run, so this was never resolved. (I've no idea if StC-O revisited this plot.)
• Amy is a tomgirl with a crossbow. While initially an interesting concept, lead writer Nigel Kitching said that he felt that he made Amy too perfect in retrospect—she doesn't even fangirl over Sonic. I think that I recall him also stating that he wanted to tone her down with some flaws, but the higher-ups said, "Naw, she's good as is."
• If you've ever seen images/heard stories of Sonic starting as a brown hedgehog, and Robotnik once being a kindly old scientist by the name of "Ovi Kintobor"—that's from Sonic the Comic.
• Dude is a fucking menace is this continuity. Ignore the fact that his design is based on his incarnation from Adventures of Sonic the Hedgehog; his ruthless is more along the lines of SatAM mixed with Sonic Adventure 2.
Things start silly enough, but then there's a plotline early on where Robotnik somehow manages to throw Sonic and Tails into the future. The pair arrive back on Mobius, and Robotnik's just like, "Whoops sure did conquer the world while you were gone! "
• Lastly? StC had a lot of mini-series about various other SEGA properties that were big at the time, at least starting out. I don't recall all of them, but I know that some were Streets of Rage, Golden Axe, Eternal Champions, Ecco the Dolphin… and a lot from a less popular game (over here) called Decap Attack.
Super Sonic from Egmont-Fleetway's Sonic the Comic.
Chaos energy that Sonic fully absorbed.
He's basically their version of the Hulk. If he's in a life-threatening situation, he will transform, go after the person that pissed him off in the first place… and then go after any and everyone else in the area.
And no, he can not control it.
Thus, Perfect Chaos was defeated, the (external) threat of Super Sonic was eliminated and kept in check once again, and the series ended on a high note.
Here's several more images of Super Sonic that I adore.
Such as:
• Sonic is a colossal dick to Tails. This was the writer's attempt to inject their version of "'tude" into Sonic, modeled after characters such as the UK version of Dennis the Menace (no relation to the U.S. strip).
• Dude is a fucking menace is this continuity. Ignore the fact that his design is based on his incarnation from Adventures of Sonic the Hedgehog; his ruthless is more along the lines of SatAM mixed with Sonic Adventure 2.
I am not even joking.