-On Mobius-

Knuckles and Tails sit in Tails' workshop, and Tails is rapidly going through program after program on his computer to find any data on Sonic, Shadow, and Silver's whereabouts, but is getting disheartened quickly.

"This is so frustrating, they're nowhere to be found, not in any zone, not in any other place I could think of, and that darn ringless warp-zone won't show up again. I really hope they're okay." Tails says as he looks down sadly.

Knuckles stands up and walks toward Tails and puts a big hand on his shoulder, "I'm sure they're all fine, those three are some of the best fighters we have, if anything tries to threaten them, they'll handle it."

Tails smiles faintly before a notification appears on his monitor, "Knuckles, looks like someone is fiddling with the Master Emerald, should we go check it out?"

Knuckles crosses his arms, "Yeah, I'll have to tell Ray to stop fidgeting with it."

As they load up into the Tornado, Tails looks out at New Mobotropolis still bearing some of the scars of the attack of Metal Tails, and he cringes as he turns on the plane.

They take off and head toward Angel Island at a leisurely pace, but when they arrive, they see a brawl taking place as the Chaotix valiantly fighting something, the pair get out of the Tornado and rush to the scene.

They see a metallic version of Knuckles much taller than everyone else, and with a wider frame, punching anyone who gets too close to him, his shoulders are squared and he's bouncing up and down exactly like a boxer. On his fists where there should be knuckles are rectangular holes for something to come out. Each of its downward quills are made of a clear material and they are all full of a black fluid.

Espio who had already gotten hit when Knuckles and Tails arrived, tries to get close to this machine again and he gets hit with a lightning-fast gut punch and then a straight jab with the machine's other fist, sending Espio into a pillar, Charmy tries as well, but he's already injured as the machine jumps up and delivers a downward slam with both fists, rocketing him off the altar and into the ground, causing Charmy to crater. Vector tries to ambush the machine while it's in the air, but it falls faster than Vector could react and drops low then delivers a devastating uppercut paired with a full-force gut punch immediately afterward, causing Vector to cough up blood and double over in pain. Mighty and Ray try to double team him with Ray from above and Mighty from below, the machine grabs Mighty before he could make a move and uses him as a weapon, he launches Mighty at Ray like a cannonball, they both fall out of the sky and hit the ground at the bottom of the altar.

"Aw man, I was promised a good fight, I guess I'm too strong for this lousy bunch." The machine bemoans.

Espio looks over at Knuckles, "Sorry boss, he was too strong, too observant, and surprisingly fast. We were outmatched."

The machine chuckles, "You're damn right you were."

Knuckles grits his teeth, "Who the hell are you?!"

The machine dusts himself off, "My name is Fist, and I'm the strongest there is. Period."

Knuckles marches up, "Oh so you think you're gonna mosey onto my island and take the Master Emerald?"

Fist looks down, "Yeah, pretty sure I am, little man."

In a flash Knuckles delivers a powerful jab right to Fists chest, which sends Fist a few feet back into the Emerald. "Good one. My turn!" Fist reels back and swings a punch with much greater speed and force than he did with the Chaotix, on contact, Fist sends Knuckles flying off the altar with a sonic-boom, as Knuckles flies through the he hits the ground and skips like a rock on water, before hitting a tree, bouncing off of it and landing face first.

Tails looks at Fist with a mix of fear and anger, while Fist's hands have smoke coming off of them from the punch. Tails points his arm cannon at Fist. Fist glances at Tails and chuckles. Then mockingly says, "And what do you think that's gonna do to me?"

Tails thinks fast, and fires a quick blast at Fist, who bats it out of the way. Tails rapid fires blasts while taking to the air, Fist then starts dodging and avoids all of them, he mutters, "You're wasting your time, kid, you can't hurt me."

Tails makes a knowing smirk, "Not aiming for you, genius." Fist looks back to see all the balls of energy floating in the air, then Fist gets a look of shock as Tails pushes a button on his arm and all the spheres of energy close their distance on Fist, and they all collide with him resulting in an explosion. As the dust is kicked up, Tails holds his gun arm to where Fist was. Tails hears, "Like I said, earlier, I'm taking this big rock." a projectile disperses the dust, a sharp black gemstone, which imbeds itself into Tails' shoulder before he could even dodge. Then he feels his consciousness fading as this gemstone is making him weaker, he notices his veins turning black, around the wound. He rips out the shard and tosses it to the ground, but he slowly plummets out of the sky hitting the ground with a thud.

Fist heaves the Master Emerald onto his shoulder and jumps off the altar landing right next to Tails, "I didn't want to use that, but you were cheating by being in the air. I shot you with enough negative chaos energy to kill an elephant. Anyways." Fist's left knuckle shoot out a long and sharp black gemstone blade and he holds his fist in the air, as he swipes down, Tails flinches, until he opens his eyes and sees a pitch-black tear in space-time, Fist casually tosses the Master Emerald in, and as he does the entirety of Angel Island shakes.

Fist feels the island about to fall, he smirks, "Man guess I get to solve all my problems today!"

Then the shaking stops.

Fist looks around confused, "Huh? Hey, stupid island, you're supposed to fall!" then Fist turns to see Knuckles with the 7 chaos emeralds spinning around him as his fur starts to turn magenta, "No, not today, I'm gonna break you apart, 'Fist'."

His quills flare upwards, and he booms from where he's standing, Fist puts his fists up defensively, but Super Knuckles blindsides him and punches him in the back. Fist sneers as he throws a punch back, Knuckles dodges and punches Fist in the face, knocking him into the air, then Knuckles charges energy into his fist and punches the air, the air pressure itself becomes a projectile, blasting Fist into a nearby mountain.

Knuckles roars out, he looks toward a suffering Tails and his Chaotix, Knuckles then punches the ground and sends healing energy through his fists and heals everyone around him, this also negates the negative energy in Tails' body. Before Tails can thank Knuckles, everyone looks up at the mountain, Knuckles can feel negative energy being pulled out of the Emeralds. Suddenly a spire of pulsing dark energy blows the top off the mountain, Knuckles looks to the Chaotix, "Everyone get out of here, unless you think you can beat that!"

The Chaotix runs for their lives as Tails stands next to Knuckles, their fur getting blasted back by the turbulent winds, "You wanna do this Tails? I wouldn't blame you if you ran." Knuckles says while stretching his arms, then Tails starts powering up as his fur turns a shimmering gold. "I'm not running, Knuckles, not now, not ever again." Tails says with confidence.

As they confirm their determination, Fist warps onto the battlefield in a jarring new form.

His body has shifted from a red metal chassis to a fully organic body with dark purple fur, his quills have been replaced by a floating cloud of black energy that orbits his head. Both of his fists have two foot-long, black gem blades extended from their knuckles. His frame is shredded with muscle, and he has black fluid running down his cheeks and a black Chaos Emerald-esque gemstone in his chest. His pupils are bright red with his sclera being black.

"Kilo wishes he could get a form like this, if I wasn't the strongest thing alive before, I definitely am now." Fist spreads his arms out. "Now I'm Super Fist, Let's go!"

Tails and Knuckles get into a fighting stance, the static of the conflicting chaos energies create lightning that scars the ground, as lightning strikes, Fist propels himself forward and clotheslines both of Tails and Knuckles, making them both spin in the air, Knuckles lands and hits Fist with a jab to the side, Fist responds with a downward punch that knicks Knuckles on the cheek, Knuckles feels his form falter for a moment, and when it powers down for a moment, Angel Island shutters, but Knuckles refocuses and lands another jab, causing Fist to wince but still smile with unshakable confidence, Tails hits Fist with both of his tails after spinning like a top at lightspeed, knocking Fist off of his feet and making him fly into the air, Fist looks at Tails as he's in the air, and his purple aura erupts out of him as he does a U-turn in mid-air and flings himself at Tails.

He goes right past Tails, but his claws still cut Tails' arm, he erupts in pain as his veins turn black in the fraction of a second, as Tails falls to one knee. This cut disables Tails' super form, the ever-smiling Fist, goes back-in, to land the finishing blow but Knuckles comes up from below and punches Fist in the stomach, diverting his path. Focusing fully on Knuckles, he throws a hard punch from above while Knuckles meets his enemy's blow, despite the blades, the blades pierce Knuckles' hands but he pushes through the pain and his super form waning on the edge of disappearing. Through sheer willpower, Knuckles yells at the top of his lungs, shattering both blades as their fists meet. The shockwave from this collision causes a ripple across the island, and a portal is torn open. Afterwards, Fist leaps backwards and bellows with a hearty laugh, "Now that was gutsy, little man, you positive energy users can't take negative energy like that, but look at you!" Knuckles' left arm is limp and cut up, but Knuckles is still in his super-form. "You're keeping yourself and this whole island up. Hell if I knew any better, I'd say you're filling in for the Master Emerald."

Knuckles puts his remaining fist in a combat ready position, "Quit your blabbering, we are not done yet."

Fist smiles, as he starts running toward Knuckles, Knuckles tries to weakly guard but takes the full force of a super-charged tackle, Fist warps to where Knuckles is about to be and grabs him by the back of the head and he slams him into the ground a few times, before spiking him headfirst, then Fist rockets upwards booming off of the ground with his raw strength, going a mile up. Knuckles rolls onto his back his face is swollen, as he stares at the pinpoint of where Fist went.

"Where the hell are you, Sonic?" Knuckles says as his super form finally fades, then Fist plummets like a meteorite, and lands a vicious knee drop on Knuckles, the force makes the already falling Angel Island pivot to one side and as Angel Island hits the ground, it levels out but sends a wave of dust and debris for miles around. Fist climbs out of the crater he made, still powered up by negative energy, the Chaos Emeralds, now tinged black are orbiting around him.

He cuts a black portal open and throws the Emeralds inside, but as it closes, he looks at the large purple vortex, and he sees three figures stepping out: Sonic, Rainbow Dash, and Pinkie Pie.