Evil Party:
Galeem, the Lord of Light
Dharkon, the Embodiment of Chaos

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"Dharkon, I think they're trying to kill us." Galeem said.

"You don't say." Dharkon replied.

"Well how many of them are there? Check your Apple Watch!" Galeem exclaimed.

Dharkon turned on his Apple Watch. "There's at least five parties. Roy's Party, Proto-Team, Edgy Organization, AC Gang, and the Corrin Crew. Roy's Party consists of Roy, Steve, Mr. Game & Watch, Popo, Nana, Female Corrin, Mario, Sonic, Pikachu, and Toon Link. Proto-Team consists of Proto-Man and Snake. Edgy Organization consists of Dark Pit, Shadow the Hedgehog, Gladion, and Dark Samus. AC Gang consists of Sam, Viv, Wil, Cit, Jeff, and Isabelle's ghost. And the Corrin Crew consists of Male Corrin, Simon Belmont, and Captain Falcon."

Galeem is taken aback. "That's so damn many..."

"And it's all because of that damn Roy." Dharkon said. "You should've vaporised him!"

"What? No, YOU should've vaporised him!" Galeem exclaimed.

"No, YOU should've!" Dharkon exclaimed.

"No, YOU should've!" Galeem exclaimed.

The two pushed and shoved each other, accidentally unleashing their powers and creating a storm in the skies.

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Meanwhile

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Roy's Party:
Roy, the Young Lion
Steve of Minecraft
Mr. Game & Watch, the Master of Two Dimensions
Ice Climbers, the Bone-Chilling Duo
Female Corrin, the Half Dragon
Mario 'Jumpman' Mario, A.K.A. Mr. Video Game himself
Sonic, the Blue Blur
Pikachu, Pika Pika
Toon Link, Wind-Waking Warrior

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"So, where to next?" Steve asked.

"I think we should-" Female Corrin began to say, before getting interuppted.

"Shut up, murderer." Nana interuppted. Female Corrin is annoyed.

"Guys... Look at the sky!" Roy exclaimed.

Everyone looked up at the sky. They saw dark, stormy clouds mixed with white, luminous clouds. Violently shifting. Almost as if they're fighting.

*THUNDER*

"EEP!" Toon Link exclaimed.

"That can't be good..." Sonic said.

"Yeah..." Pikachu added.

"Why would the clouds be so dark and bright at the same time?!" Mario exclaimed.

"Guys, it's because of Gal-" Female Corrin began to say, before being interrupted.

"Shut up, murderer." Roy said. "Hmm, I think it's because of Galeem and Dharkon. Ah, yes. I'm so smart!"

"Well then what're we waitin' for? Let's stop them!" Popo exclaimed.

"I do suppose we have everything we need. What is your input, Roy?" Mr. Game & Watch asked.

Roy has a look of determination. "I say we go stop Galeem and Dharkon, ONCE AND FOR ALL!"

"YEAH!" Everyone exclaimed.