Two girls who host a children's show called  "Puzzle and Sling: Boredom Killers" in which both of them try to kill the concept of boredom. They have 4th wall awareness and are aware of the kids watching. Puzzle is a rude, vulgar, and mean spirited tomboy with a propensity towards violence and a twice sense of humor. Sling seems fun, happy, and perky, but in reality she's stressed, paranoid, and emotional. They rarely agree on anything, but they both agree that children should never be bored.