The music is a collection of tunes from each francise.
Character Themes
Mario
Mario- Super Mario Bros. World 1-1 Theme
Bowser- Super Mario World Castle Theme
Peach- Super Mario Bros. Underwater Remix
Wario- World Wario Pause Music
Luigi- Luigi's Mansion Theme
Zelda
Link- Zelda Overworld Theme
Zelda- Gerudo Valley
Tingle- Zelda II Overworld
Ganondorf- Ganondorf's Theme
Ghirahim- Final Ghirahim Battle
Pokémon
Pikachu- Pokémon Theme
Mewtwo- Vs. Kanto Wild Pokémon
Genesect- Vs. Unova Legendary Pokémon
Blaziken- Vs. Team Magma/Aqua Leader
Metroid
Samus- Theme of Samus Aran
Ridley- Ridley Theme
Comics
Batman- Batman: Arkham City Theme
Joker- Why So Serious?
Iron Man- Iron Man
Mega Man
Mega Man- Wily Castle 2
Roll- Cut Man Theme
Yellow Devil- Yellow Devil Theme
Star Wars
Darth Vader- The Imperial March
Luke Skywalker- Star Wars Theme
Boba Fett- Duel of the Fates
Minecraft
Steve- Calm 1
Enderman- The Nether- Concrete Halls
Sonic
Sonic- Green Hill Zone
Shadow- I Am... All of Me
Gravity Falls
Dipper and Mabel- Gravity Falls Theme
Bill Cipher- Gravity Falls Theme (Orchestra)
Final Fantasy
Cloud- Final Fantasy VII Theme
Kefka- Dancing Mad- Final Tier
Sephiroth- One Winged Angel
YouTube
Nostalgia Critic- Nostalgia Critic Theme
Angry Video Game Nerd- Angry Video Game Nerd Theme
Angry Joe- Angry Joe Theme
SomecallmeJohnny- Live and Learn
Disney
Mickey Mouse- Mickey Mouse Club Theme
Jack Skellington- This Is Halloween
Misc.
Donkey Kong- DK Rap
Gecko- Groose's Theme
Little Pig-
Cornholio-
Ryu-
Strider-
Gabe Newell-
Domo-
The Ghostbusters-
Gordon Ramsey-
Will Smith-
Cole MacGrath-
Dante-
Willy Wonka-
Shrek-
Professor Layton-
Pheonix Wright-
Travis Touchdown-
Popeye-
Poopbutt Koopa-
Death-
SomecallmeJohnny-
Bruce Lee-