Before we got started with this chapter I have to say this: The chapters will not be coming this fast! The only reason I posted these ones so quickly was to make up. The first four were simply updated versions, and this one is the one that we're actually on. Just to clear that up before anyone says anything.

Chapter 5: On to Bomb-omb Battlefield! (Part 1)

Mushroom Castle: Throne room

Sonic and Tails had just finished telling Mario and his friends their story, and how they got there.

"So you're saying this machine sent you all here?" Toad asked, after Sonic and Tails finished speaking.

"Yeah," Sonic nodded. "Egghead thought he could transport himself to different worlds but the machine somehow malfunctioned and sent us here."

"Amazing!" Luigi exclaimed in wonder.

"I agree!" Peach nodded her head.

"Hey Sonic," Tails turned to his best friend. "Do you think our other friends got sent here as well?"

"Hmm…" Sonic said thoughtfully. "They might have. But right now we should look for the Chaos Emeralds so no one else gets them."

"Chaos Emeralds?" Peach asked.

"What are those?" Toadsworth, the old secretary asked.

Tails explained what the Chaos Emeralds were. "The Chaos Emeralds are gems with mystical powers. If someone collects all seven of them they can have unlimited power."

"Unlimited power!?" Luigi and Toad asked in unison.

Tails nodded. "If the wrong person gets their hands on them we're in trouble."

"Then we should find them right?" Mario asked.

Tails nodded, and then turned to Sonic. "I still had my radar with me when we were sent here, so I was able to do a scan of the area while you were eating." Tails remembered how Sonic devoured the spaghetti that the princess had made.

"Yeah?" Sonic asked. "And what'd you find?"

"I found a signal coming from some place called Bomb-omb battlefield." Tails told him. "I'm thinking it's a Chaos Emerald."

"All right, so where is this place?" Sonic asked.

"You have to take a portal to get there." Mario replied. "Luckily inside the castle there are many portals hidden inside different paintings."

"Well that's convenient." Sonic said, relived.

"Come on! Let's go to Bomb-omb Battlefield!" Mario said, getting up. He led the team to the portal and they jumped in.

Bowser's Castle: In the throne room

Bowser and Eggman were discussing plans to defeat their adversaries.

"So which villain should we do first?" Eggman asked Bowser, who shrugged.

"I don't know." He said. "You're the genius. I'd say a strong one."

"Why bother bringing back a villain when you've got me though?" A voice coming from somewhere in the room asked.

Bowser and Eggman looked around in surprise. "Who's there!?" Bowser demanded. "Show yourself!"

"If that's what you want…" There was a slight distortion in the room as a rather short, strange looking character appeared. He was purple and yellow, and had a black and white mask over his face. "Well, here I am." He announced.

"Di…Dimentio!?" Bowser asked in complete shock as he recognized the individual. "But…but you're dead! You died when your robot was destroyed!"

"Of course that's what you thought." The one called Dimentio said calmly. "That's what I wanted you to think. Since you were stupid enough to work with the Mario Brothers at the time I decided to bide my time before I struck again. Right before the robot exploded I teleported out, leaving a clone of me in my place. So," he then turned to Eggman, who was listening in wonder. "Who's the new guy?"

"My name is Dr. Eggman." The scientist introduced himself. "It's nice to meet you."

"Since you were 'kind' enough to volunteer," Bowser said to Dimentio. "Why don't you destroy Mario and Sonic?"

Dimentio chuckled a bit. "That was exactly what I was going to do. I just wanted to make sure you weren't working with them anymore. I know where they're headed, and I'm gonna have a bit of fun with them. See you all later. Ciao!" Saying that, he suddenly vanished from sight.

"Well…" Eggman said after an awkward silence. "He's certainly confident."

"Yes," Bowser nodded. "Dimentio is always confident. I'm just surprised that he survived."

"So wait, you worked with Mario once!?" Eggman asked.

"A long time ago. I don't want to talk about it."

"All right…"

"Now," Bowser turned to Eggman with an evil smile. "Who should we bring back?"

"I know just the one!" Eggman laughed. "He's my strongest creation! He's almost killed Sonic several times! He should do the trick!"

"Good, then do it. Dimentio will buy us a bit of time." Bowser said, at which Eggman nodded.

"It will be done!" Saying that, Eggman walked out of the room to begin his work as Bowser sat back down on his throne.

"Dimentio…" He said quietly. "You did survive. You better not screw us up!"

..

..

To be continued...

Dimentio has somehow survived his last battle and is back for revenge! What's worse is that Eggman and Bowser are working with him to destroy the heroes! Sonic and Mario may have a small problem finding the first Chaos Emerald if Dimentio decides to interfere. Can the heroes find it before Dimentio finds them? Or will Dimentio find it first? Find out next time in Heroes Alliance!

A/N: Chapter 5 done! So, how many people know who Dimentio is? Dimentio is a villain only seen in Super Paper Mario, but he is one of the most loved villains in Mario history. Dimentio attempted to destroy the universe, forcing Mario and Bowser to make a hilarious alliance. But now he's back! And I can't wait to see what he has up his sleeve. Can you? If you have any questions, or are enjoying this, please comment (review) and I'll answer you. Thanks for reading!