"Reveal 1: Picks up immediately where the last one completes. Samus divekicks towards Ridley but he grabs her and slams her against the ground. He drops her and prepares to impale her with his claw, but it's stopped by a whip. Reveal Simon. Tagline is, "Simon Belmont whips up a storm!"
Reveal 2: Pikachu fights other characters on a stage (I think it's the new Pokemon Stadium). Reveal Mimikyu hiding behind some stage terrain, watching the battle. He hears everyone cheering for Pikachu as it defeats its opponents. Pikachu walks by Mimikyu's hiding spot, he pulls him into the darkness, you hear some cartoon fighting, and then Mimikyu pops out. Reveal is first, "Pikachu shocks the competition!" before the music stops and "Mimikyu scares up some fun!" is slapped over it.
Reveal 3: I don't know much about how this one works out other than that my friend said that it features Ashley and Shadow, seemingly as friends. Comedic one that plays on them both being kind of dark and brooding.
Reveal 4: King K. Rool beating up DK, Diddy, and Ness. Funky Kong bi-plane fires at him, then Funky Kong surfs into battle and stands alongside his pals. Something along the lines of, "Funky Kong makes some waves!"
Reveal 5: This one starts with footage from the Smash Bros Ultimate reveal where they kill Waluigi. We instead follow him down the abyss until he lands unceremoniously in mud. Long story short, he tries to get back into Smash by writing his name down as Geno. He finally appears, dressed haphazardly as Geno, in a Forest Maze-esque stage where he surprises Luigi, Pikachu, and Villager by popping out along with the tagline, "Geno strings up his foes!" The real Geno appears and immediately defeats him, and once again the tagline appears. Waluigi sulks in the dirt, until Luigi pulls him up, dusts him off. Tagline finally says, "Waluigi inches over the finish line!"