Dun dun dunnnnn! Boss fight incoming!

"That fucking neurotoxin is really kicking in now, I'll kill Eggman once I get ou-" Knuckles started to breathe fast.

"Knuckles, are you okay? Knuckles!" Amy started to worry. "Tails, what do we do?" She turned around to see Tails was still out cold. "Now what do I do?" A loud crash was heard. Eggman saw it was Sonic and decided to give him a warm welcome.

"Aha, Sonic! It's about time you showed up! How about having a good look at your friends."

"I'll fucking kill you for this Eggman! You gone too far this time and you won't get away with it!" Sonic fell to his knees.

"Surrendering? I thought you wanted to kill me? But I guess not." Sonic wasn't giving up though, the Chaos Emeralds Eggman had used negative energy, but the rage inside of Sonic was also fueling the form he was about to transform into, Dark Sonic.

"Right, you wanna play around motherfucker? Send me your best, cause I'm coming for you." Sonic was immediately interrupted by Shadow. "Out the way Shadow, I'm here for Eggman."

"You're pathetic, even in that form you can't beat me now."

"Oh, you want me to prove that? Cause if I have to I fucking will." Sonic charged at Shadow with incredible speed, Shadow attempted to block it but there was too much power in the punch for Shadow to handle, so it sent him flying across the corridor, smashing and getting stuck in a wall. Sonic grabbed him by the neck. "So, do want to continue acting like a wise guy or do you want to be free?" But out of nowhere, Rouge snatched Shadow out of Sonic's hands and flew away. "Where the fuck do you think you're going?"

"It's about time you got here Sonic." Eggman smiled.

"Hand them over Eggman so we don't need to get violent."

"You'll need to defeat my super robots first, these robots are specially designed just for you Sonic!"

"Okay then, thanks for the present." A huge load of robots appeared right in front of Sonic. "Let's get this on then!" And within seconds, all the robots were destroyed.

"Impressive."

"Hand them over now Eggman, don't make me anymore angry than I already am."

"I would, if I wasn't an evil genius! Goodbye, Sonic the Hedgehog!" Eggman tried to fly away in his machine.

"You think you're leaving?" Sonic jumped up and destroyed Eggman's machine with a single punch. "If you want less dangerous results, better not piss me off next time." Eggman ran off, leaving the cell remote behind. "Well, that was easier than I expected."

"Sonic...? Are you okay?" Amy quietly said.

"Yes...I'm fine. How are the others doing?"

"Tails is out cold and-"

"No...I'm not." Tails had finally awoken but couldn't stand up. "Sonic? Why do you look like that?"

"I...think, it was because I was angry, but I also think it's coming from the negative energy of the Chaos Emeralds. It makes me just want to unleash my anger on anybody, and unfortunately, that includes you guys. I'm only just managing to control it. I'll let you guys out now, but you'll have to go to hospital, I don't think Eggman was kind enough to have supplied us with a antidote to the neurotoxin."

A few hours later in the hospital...

"Are they going to be okay Doctor?"

"Luckily enough, you rescued them just in time before the neurotoxin really took it's toll, the only person who is in possible danger is Knuckles."

"What? But Knuckles is the strongest guy I know! How could he have been the most effected?"

"We don't know why, sorry Sonic." The doctor walked away. Sonic thought to himself. 'There has to be a reason for it damaging Knuckles the most, he's probably double the strength of Tails and Amy combined! Oh well, I guess at this point in time nothing can be done to make sure he lives at this point in time.' Sonic left the hospital and went home.