Bill and Aldo Get Brave is a crossover that will be made by N/A. It is unknown when to appear on YouTube in the future.
Bill, Aldo, Bev, Fred the Penguin, Ed, Oly, Waddle, Stan Marsh, Kyle Broflovski, Eric Cartman, Kenny McCormick, Butters Stotch, Big Bird, Oscar the Grouch, Snuffy, Elmo, Zoe, Grover, Telly, Rosita, Baby Bear, Abby Cadabby, Bert and Ernie, Cookie Monster, Prairie Dawn, Count von Count, Bear, Ojo, Pip and Pop, Treelo, Tutter, Bugs Bunny, Daffy Duck, Porky Pig, Sylvester, Tweety, Foghorn Leghorn, and the rest meet Princess Merida who learns to become brave by trying to learn archery. After Merida disobeys her mother, she separates the family by tearing the blanket with a picture of her and her family on it. Later she encounters the witch who makes lots of bear objects and stuff, and then the witch makes Merida a cake for her mother. But after Mom eats the cake the witch made, she turns into a bear, and then Merida's brothers eat the cake to turn into bear cubs after her. After she defeats Mordu, an evil black bear, she covers her mother with the blanket under the sun to turn her into a human again and then her brothers too.
- Ike Broflovski, The Simpsons (Homer, Marge, Bart, Lisa, and Maggie), Milhouse van Houten, Krusty the Clown, Mickey Mouse, Minnie Mouse, Goofy, Donald Duck, Daisy Duck, Pluto, Max Goof, Clarabelle Cow, Horace Horseollar, Peanut Otter, Butter Otter, Jelly Otter, Ernest Otter, Opal Otter, Flick Duck, Munchy Beaver, Pinch Raccoon, Scootch Raccoon, Ootsie and Bootsie, The Little Einsteins (Leo, June, Annie, and Quincy), Jake the Pirate, Izzy, Cubby, Skully, Yakko Warner, Wakko Warner, Dot Warner, Garfield, Odie, Chloe King, Alek Petrov, Amy, Paul, Jasmine (The Nine Lives of Chloe King), and Brian Rezza will guest star in this film.