Godzilla. Bow to the king. Charles Foster Offdensen (Metalocalypse) vs. Brock Sampson (Venture Brothers) in a fight to the death.
Probably Wolverine, but it'd be a hell of a fight. Finn, Jake, Marcy, PB, and BMO vs. Mordecai, Rigby, Pops, Skips, and Muscle Man in a 5v5 tag team wrestling match.
I'd think Finn's team, because of only Jake...Skips and Muscle Man are the only one on the team that has a CHANCE of beating them, and Jake can easily overpower them ok... Yoshi Vs. Godzilla in an eating contest
Sora, with his new forms Riku wouldn't be able to stop him. Sakura Haruno vs. Mikasa Ackerman in a lingerie pillow fight?
Sakura... although I think the REAL winner is whoever is watching. Natsuru Senou Vs. Ranma in a bikini contest
Queen Elsa. She has greater control over ice, and can create armies of warrior snowmen to back her up. Ganondorf (Twilight Princess) vs. Ganondorf (Wind Waker)
Rarity. The only fur she wears is her own. Newman's Own lemonade vs. Simply Lemonade in a taste test.
Glasses, because amoebas. http://www.newser.com/story/190881/amoebas-eat-contact-wearers-eyeballs.html Newman's Own lemonade vs. Simply Lemonade in a taste test.