The Cheat is Not Dead - Homestar Runner
Spider Man - Moxy Fruvous
Here I Come to Save the Day - Andy Kaufman

The low hanging fruit in this case is theme songs. I did try to not be TOO lazy about it though.

I almost went with Sat Morning Watchmen, but you said "cartoon character" singular.

I would like a Tinny Mix next --songs with some relationship to Tin or Aluminum.

One Tin Soldier - Coven
Tin Man - America
Aluminum - Barenaked Ladies
{Honorable mention: The Weird Al Show Theme - "Weird Al" Yankovic ('cause Al = aluminum)}

If this game is still going, I would like a tiny mix of songs about dinosaurs, please.

The Dinosaur Song
Dinosaur
Jurassic Park

I'd like a mix with songs about a friend or family member, but songs you don't want that person to hear!