Trailer 1
Mystery Voice: IN A WORLD... NO BETTER YET... MULTIVERSE...
In the Mushroom Kingdom, a cloudy trail of dust is seen at high speed.
Mystery Voice: SUMMER IS ON THE VERGE OF BEING RUINED...
Multiple airships are seen surrounding Station Square.
Bowser (over P.A.): This world and many others will fall under the control of the Great Villain Empire!! HAHAHAHAHAHAHA!
Mystery Voice: BY THE BIGGEST BADDIES KNOWN TO MAN.
A silhouette of Bowser, Eggman, King Boo and Eggman Nega are seen on a screen. Eggman and Bowser's armies attack Team Rose (Gemerl included) and a group of girls who are hiding in the shadows. Shadow then appears and wipes a handful out.
Shadow: So the doctor's already begun his plans...
The scene then cuts to Mario in a living room, talking to a certain family.
Mario: I was hoping that I'd get to enjoy summer here in Elmore. But I guess now I'm in for the fight of my life. But I can't do it alone.
Mystery Voice: BUT THESE BAD GUYS ARE FACING THE GREATEST GROUP OF HEROES... KNOWN. TO. MAN!
The Crystal Gems are seen facing an army of Badniks near the Temple.
Garnet: Gems... do your things.
Amethyst: Oh, YEAH! LET'S WRECK THESE BOTS!!
Scene cuts to The Park, where Mordecai, Rigby, Muscle Man, and HFG are fighting Bowser's army.
Rigby: YEAH! Taste Death Kwon-do, turtle chumps!
Muscle Man: WOOO! Yeah, eat it, grandmas!
Mystery Voice: SuperNekoBro presents...
Based on the characters owned by...
Nintendo.
Luigi and Yoshi are seen running from an army of Boos.
Scene cuts back to Mario.
Mario: So you guys wanna help me?
Scene reveals the Watterson children.
Gumball and Darwin (in excitement): YEAAAAAAH!!
Anais (unenthusiastic): Yeeeaah... I guess.
Cartoon Network.
Sonic, Tails, and Knuckles are seen over the Lost Hex fighting Nega's army of Badniks.
Tails: Ready to rock, Sonic?
Sonic: Ready to roll, Tails!
Sonic spin dashes off the plane and homes in on several Badniks.
Sega.
And the former rivals of Cartoon Network...
Scene cuts to Sonic reaching his hand out to someone.
Sonic: So kid, what's your name?
The camera turns to reveal...
Lincoln: I'm the Man with a Plan. Lincoln Loud.
Nickelodeon!
Mario: YOU HAVE HOW MANY SISTERS?!
Lincoln: 10. Speaking of which, I wonder where they are.
Scene cuts to Team Rose and Shadow, the latter whom is annoyed with the Loud sisters who are each doing their own thing.
Luan (to Shadow): Hey, Shadow!
What do you get when a snake and a hedgehog mate? Two yards of barbed wire! Hahaha!
Shadow: Why didn't the doctor leave me to die?
Mystery Voice: THIS.. IS THE MOST EPIC CROSSOVER OF THE CENTURY-
Gumball: Hold on, Darwin, what are you doing?
Darwin: I'M DOING AN EPIC MOVIE TRAILER VOICE.
Gumball: Why do I get the feeling that you've done this before?
Darwin: WHAT DO YOU MEAN?
Gumball: Oh, never mind. Just keep going.
Darwin: OH, OKAY. MOVING ON...
THE MOST EPIC CROSSOVER OF THE CENTURY IS HERE. THIS... IS...
Cut to all the heroes standing atop a cliff reminiscent of SSBB's opening.
DARWIN: SUPER MARIO BROS. X-OVER!
THE CROSSOVER SUMMER!
Sonic: AW, YEAH!! This is really happening!!
Mario: Let's-a go!!
The heroes jump off the cliff in slow motion.
DARWIN: COMING 2019 OR 2020. WHATEVER COMES FIRST. HOPEFULLY 2019. HOPEFULLY...