I do not own Sonic the Hedgehog or any of the characters.

Fulfilled

"Now all that's left is for you to get revenge," Rouge said.

"Oh, is that all," Shadow snorted, shaking his head, beginning to breathe harder by the second. "I'm just about tapped out."

"Same," Sonic nodded. "And Eclipse will be blocking our Chaos Powers." He slipped out of Hyper Mode and sighed. "So tired."

"Think we can take a quick break here to rest up?" Shadow asked, just as a door opened and Eclipse stepped through the door with Shadow Doom. "Guess not."

"You did well," Shadow Doom said, walking into the light. "I never would have guessed he actually did have any semblance of power. Well done defeating him."

Everyone stared at him, taking in his appearance. Memories of his last fight with him began to filter into Shadow's mind. He'd been doing poorly even befre the Generals all arived, now sporting his friends' bodies, and took him down in seconds. But now that they were gone, hopefully he'd stand a chance. And all that remained was Doom. He was exactly as Shadow remembered. His fur was gone, aside from some white fur at the top of his chest and some black fur around his wrists and ankles extending from under his inhibitor rings. The rest of his body had become like that of a Black Arm. The tips of his spines were red, most of his body was black, and he had his ears had mutated into a pair more spines at the same time as smaller versions of Black Doom's horns jutted out of the sides of his head. He had clawed black fingers extending from red hands, giving the appearance of fingerless gloves, similar pigmentation on his clawed feet, and his tail had grown to about the same length as his arm with a small spike on top about the middle, then another just before the tip.

"So this is him, huh?" Sonic asked. "He doesn't look so tough. We can take him."

"No," Shadow said, stepping forward. "He's mine. I have to do this myself."

"You can't beat them both on your own!" Rouge said.

"He doesn't have to," Zeta said, stepping up beside him. "I have a score to settle with Eclipse."

Eclipse grinned wickedly, his tail rising and pointing at her. Then, the two of them took off, both flashing across the room at their chosen opponents. Zeta slashed Eclipse's tail aside with a blade, his tail's flesh withstanding it, then punched him across the jaw, hurling him back and following him as a cannonball. Shadow, on the other hand, punched at Doom, only for Doom to catch it, grinning.

"It's been some time since we've been here," Doom said, rotating his hand outward until Shadow's was upside down, then curling Shadow's wrist backward painfully. "Let's see if this goes any differently."

"It will!" Shadow snarled, jumping and throwing a left roundhouse kick at his head, only for him to catch his ankle.

Shadow tried to fire off a Chaos Blast experimentally, but his powers were already being blocked, as he'd expected. Instead, he slammed a fist into Doom's face, freeing his other hand and his foot. Then, his right foot's front thruster launched his foot into an axe kick that doom stepped back out of the way of. Then, Doom's foot crashed into Shadow's chest, hurling him away. He flipped, landing on his feet and launched himself forward, spinning past Doom's fist and slamming his own into the side of his face, then flipped into a windmill kick with his right shoe's thrusters, slamming his heel into the back of his head. Doom spun instantly, smirking widely before a blast of Chaos Energy exploded from his hand into Shadow, sending him crashing into the wall. Shadow growled, streaking out of the wall and launching himself at Doom, only for Doom to catch him with one hand, then spike him into the ground and punt him. Shadow uncurled, landing on his feet and glared at Doom. He was toying with him. Even disregarding his Chaos powers, he was toying with him. Shadow exploded forward, Doom grinning and moving to meet him. However, as their fists collided with each other's between them, Sonic shot toward Doom from off to his left. The change was instant. Doom grabbed Shadow by the wrist, then caught Sonic's sword as he slashed at him before swinging Shadow around and smashing him into Sonic. At the same time, he crushed Sonic's blade, shattering it, and Sonic and Shadow both streaked across the room, crashing into the wall before Doom blasted everyone else besides Zeta with a Chaos Blast, sending them all crashing into the wall as well. Sonic stood, only for Shadow to grab him by the throat.

"I told you, this is my fight!" Shadow snarled. "Stay out of it!"

He shoved him aside and began to walk forward, Doom smirking and relaxing again, seeing Shadow was going to attack him alone again. Shadow narrowed his eyes. He refused to lose this time. He refused to allow things to play out the way they did before. He couldn't do anything before. He couldn't protect the others. He couldn't protect Rouge and Blaze. He couldn't avenge them. He refused to allow that to happen again.

Doom smirked as he stepped around Shadow's strikes as easily as he had the first time they fought. "So think it'll end differently, do you?" He laughed and as Shadow moved to punch him, he slammed a roundhouse kick into Shadow's brain, sending his entire world spinning and sending him bouncing away. "And how are you going to manage that miracle?"

Shadow stood, growling, then shot forward, launching himself forward with his shoes, only for Doom to step around him and spin. Suddenly, there was a sound like metal shrieking against metal before an explosion sent him flashing across the room and bouncing off the wall. He landed hard and looked down at his feet. His shoes were ruined. The jets on the bottom had been destroyed by Doom's tail. His gut dropped. He couldn't win like this. Unlike the others, he didn't actually have super speed. He had enhanced cognition the same as them, but his actual speed was only that of a normal hedgehog. His shoes were meant to correct that. According to the knowledge he'd been created with, the original Shadow was the same. Without his shoes, he couldn't beat Doom.

He looked up at Doom as Doom drove his tail into his right shoulder. Shadow shouted in pain as he was lifted into the air, gripping the tail and pulling futilely. Doom laughed.

"You're supposed to replace me?" Doom scoffed. "You? You're nothing!" He flung Shadow away with a flick of his tail. "You're a piece of scrap metal they painted a face on and told you had a great destiny!"

"Stay away from him!" Rouge shouted, she and Blaze both moving to attack doom, only for his tail to bat Rouge one way, then Blaze the other.

"Trash even more pathetic than this thing should stay out of this," Doom said.

"We won't let you hurt him!" Blaze shouted, hurling a dozen fireballs at him as both launched themselves at him again.

"No," Shadow said weakly, voice barely above a whisper and not reaching his own ears, much less theirs. "Don't fight him. He'll...kill you."

Doom turned his head toward Blaze, eyes flashing before a Chaos Spear shot out of them for each fireball, dispersing the fireballs before arcing around and exploding against her. She screamed in pain as she shot backward, and Doom turned, leaning back and avoiding Rouge's kick before punching her, Rouge streaking away as well, crying out in pain as one of her wings hit the wall wrong and was crushed. Shadow forced himself to move, staggering to his feet before Doom appeared in front of him, backhanding him and setting off a Chaos Blast, sending him bouncing off the wall, his right arm spinning away. He groaned, holding a hand to his wound, looking to Doom as Sonic, Knuckles, and Silver all moved to fight him, only for him to smash Knuckles into the ground with his tail, then catch both hedgehogs by the face, smashing their heads together. Then, he hurled them away, punting Knuckles. Blaze leapt at him again, but he punched the tip of her rapier's blade, crushing the blade before his fist crashed into the side of her head, shattering her helmet and sending her bouncing away. Rouge jumped and kicked at him from behind, but he brushed her foot up over him before his tail smashed into her between her legs, launching her into Sonic just as he stood, both crashing to the ground.

Then, Zeta was there, slashing downward at him with both blades. He spun, deflecting them, and punched at her, but she spun out of the way, driving a blade up at his side, only for Eclipse to appear beside her, kicking her away. She crashed to the ground, rolling to a stop beside Shadow, and looked over at him, gasping and covering her mouth, eyes watering.

"Please," Shadow begged, tears running from his eyes. "Just get away. Take everyone and run."

Zeta shook her head and turned, pulling her hand off and firing a bolt of lightning at Eclipse. However, he smirked before the bolt broke apart against Doom's Chaos Blast, holding it back for a moment before the lightning bolt ended, the blast launching Rouge, Blaze, Knuckles, Sonic, Silver, Amy, Espio, and Vector all. Zeta shot forward, Eclipse moving to meet her and they crashed into each other as cannonballs, both bouncing away, but as Zeta landed, Eclipse blasted her with a Chaos Blast of his own. She bounced past Shadow and Eclipse landed over him, smirking down at him before stepping over him.

"I think it's time for me to finish you, android," Eclipse said, then stopped as Shadow's free hand caught his tail. Eclipse turned, cocking an eyebrow at him. "Really? You think you're in any position to help her?"

"Please," Shadow said. "Let them go. You can kill me, just let them go."

Eclipse laughed, his tail flicking and slamming into Shadow's chest, slamming him into the wall as Zeta charged at Doom again. "Oh, I like this. We're not going to kill you, Shadow. Not yet. First, we're going to kill everyone you love. Except the cat and the bat, and maybe this android. Them, we're going to torture, and probably rape, and you're going to watch. Then, eventually, we'll kill them. Then we'll torture you."

"You're a monster," Shadow said.

Eclipse began to laugh, Shadow looking past him just in time to see Doom slam Zeta into the ground, driving his tail down into her gut. He ripped it free and blasted several of the others away.

"You just sit tight, failure," Eclipse smirked. "I'm going to go and play with the others for a bit."

Shadow looked to Zeta and Doom again as Doom raised his tail, the point directly over Zeta's head. Then, Sonic bounced off the ceiling directly above Eclipse, crashing down on his back and driving his broken sword into Eclipse's head.

"Got you," Sonic grinned, then collapsed, blood coating the fur on the left side of his head and one arm broken.

Shadow's eyes widened, before he felt power flood him. He focused it instantly and exploded off the ground, flashing across the distance to Doom, slamming into him as a cannonball, and launched him away. He landed on his feet and focused, golden energy shining from his body before his arm flew across the room, pressing into his shoulder where it should be, then shone, reattaching and the hole sealing. The golden energy faded and Shadow glared at Doom, who huffed, dusting himself off.

"So, Eclipse bit the dust then?" He smirked, but just as the parasite inside Eclipse burst free, a Chaos Spear flashed from Shadow's hand, blasting it into paste in an instant without Shadow looking. "I guess so. Unfortunate. However, not unforeseen. So, what now? Will you take Super form to face me? Hyper form, maybe?"

Shadow narrowed his eyes, readying himself to fight as he was and Doom laughed. He beckoned Shadow forward and Shadow shot forward, clearing the distance faster than Doom could react to, slamming a kick into his head, then twisting and slamming a punch into his other side. He spun, slamming a windmill kick into the side of Doom's head, sending him bouncing across the room. Doom pushed himself up and roared in rage, blood red Chaos Energy shining from his body.

"How are you able to move so fast!?" Doom demanded. "I destroyed your shoes! You should be slow, not faster than ever!"

"You made a mistake," Shadow said. "I always used my shoes, so I never realized. I've got a Master Emerald inside of me. Its power gives me more speed than my shoes ever could. More speed than Sonic has. And also, there's this." He began to shine gold instantly, lifting into the air as his quills curled upward, his black fur turning gold. "I don't need the Chaos Emeralds to use Super form anymore."

Doom huffed, holding his hand out. The emeralds streaked across the room from wherever Sonic had hidden them, forming a circle behind Doom before he also turned gold, minus his red parts.

"If you don't want them, I'll take them!" Doom snarled.

"Have them," Shadow said, Doom's eyes widening. "As I told Mephiles earlier, I don't need to have them to use their power." He began to flash several colors as he entered Hyper form again. "It's over, Shadow Doom. You'll die for what you've done to this world."

"Never!" Doom seethed. "I am eternal!"

"No," Shadow said flatly. "You're just an insect that's long overdue to be crushed."

Doom roared, exploding forward in a golden ball of Chaos Energy, but when he reached Shadow, Sonic's sword appeared in his hand in a flash of light, the blade suddenly restored and with its golden lattice. Then, Shadow shot forward, slashing Doom as he passed, splitting him across the torso. Doom stopped, staring straight ahead with his eyes wide in surprise, then collapsed, his halves separating along the cut. Shadow sighed, flipping the sword over and holding it out so he could see the face.

"Thank you for your help," Shadow said.

"You're welcome," the sword said.

Shadow dropped to the ground, exiting Hyper form before holding out a hand, using the Master Emerald to open a portal back to the others' dimension. Everyone began to head through in silence, none of them in high enough spirits, or a low enough amount of pain, to speak. Silver brought Sonic using his powers, and Shadow walked over to Zeta with Rouge and Blaze, since she was still lying on the floor. He knelt, using the Master Emerald's power to heal her, then helped her stand, only for her to kiss him. After a moment, Shadow pulled away, sighing.

"Zeta-"

"It's alright," Blaze said, both looking at her in surprise. "She's welcome, if you want."

"After everything that's happened, and after she was willing to give her life for yours, both inside of that giant monster and against Eclipse and Shadow Doom, we've got no right to say she can't be with you too," Rouge said. "So if you want her, we're willing to share."

Shadow stared at them for a moment before smiling and nodding. "Alright. Then I guess we'll have to welcome you properly later."

Zeta blushed but smiled and nodded, kissing him again, Shadow kissing her back this time. Once he pulled away, Rouge pulled Zeta into a kiss as well.

"Just so you know, you're still bottom of the totem pole," Rouge said. "You're basically just our sex toy."

Zeta smiled, nodding. "I can live with that. But, if I'm the bottom, assuming Shadow's not on the totem pole, who's the top?"

"Obviously me," Rouge smirked.

"Excuse me?" Blaze asked, raising an eyebrow. "I'm pretty sure it's clear that I'm the top."

Shadow smirked, shaking his head and wrapped his arms around the two, kissing them both before walking toward the portal with them, Zeta just behind them. "We can spend all week figuring out who's on top of who once we get back and recover. For now, I've had enough of my home for multiple lifetimes."

Rouge and Blaze nodded, leaning their heads on his shoulders before the four of them passed through the portal and into GUN HQ, stopping only long enough to make sure everyone was going to be okay before leaving for Shadow's room to sleep, recover, and settle the dominance issue.

THE END

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