1. Attack on Titan x Pacific Rim
Can you imagine how amazing this mashup would be? Humanity has one last hope to combat the Titans: Jaegars! Imagine this: Mako and Mikasa mind meld and end this pesky Titan problem, probably by sticking a bomb in a giant ocean abyss. AWESOME.
2. Game of Thrones x Watchmen
This mashup makes so much sense. Both stories feature a big cast of complex characters with involved back stories whom we care about even though they're all bad people. We have fun following them as they pursue "justice" or "power" and destroy the world in the process.
3. Fallout x Adventure Time
The Land of Ooo is a post-apocalyptic wasteland filled with mutants, so it ain't hard to picture Finn getting into trouble in the American commonwealths. And Jake would definitely have an awkward encounter with a traditional, normative dog.
4. District 9 x Guardians of the Galaxy
District 9 and Guardians of the Galaxy both did a wonderful job of making us empathize with strange-looking aliens, so the two films should do a crossover in which Rocket and Groot help all the Prawns break out of District 9. And then they all get down to retro 80s music.
5. Mario x The Matrix
Is the Mushroom Kingdom really so different from the Matrix? Think about it. Mario is The One sent to save the world. He masters the rules of the world and performs incredible physical feats. This crossover will have that Matrix Revolutions dance scene, but with goombas. Just a sweaty underground club filled with goombas. Mmm.
6. Breaking Bad x Homestar Runner
Walter White and Strong Bad share the same resentment and bitterness. And a propensity for innappropriate nudity.
7. Ghostbusters x Beetlejuice
These movies are ripe for a crossover because they both nail a tone that's the perfect combination of spooky and silly. Also, Beetlejuice is the only Ghosbusters enemy more formidable than Stay-puft. This is a match made in heaven. Or hell. Or whatever type of after-life you believe in, man.
via Dan Meth
8. How to Train Your Dragon x Harry Potter
J.K. Rowling made it clear how incredibly difficult it was to train dragons in the Wizarding World. We'd all love to see a crossover that focuses on the next generation of dragon trainers as they make their way through Hogwarts.
The only problem I have with this illustration is the Hufflepuff dragon trainer. We all know no Hufflepuff would try to train a dragon.
9. Sherlock x Peanuts
These two series focus on the friendship between an ordinary fellow and a neurotic weirdo. Both Charlie Brown and Martin Freeman have built their careers on being the likable underdogs so this crossover is written in the stars. Plus, Lucy IS Irene Adler, but instead of pulling a football away from Charlie Brown, it would be the crown jewels or something much more important and expensive.
10. Dragon Ball Z x Seinfeld
These older shows have much more in common than you'd think. They both have rabid fan bases who remain devoted even after the shows went off the air. And both of their reruns are impossible to turn off. And all their characters are terrible people, but you love them anyway.
11. Firefly x Star Wars
Omg omg omg I KNOWWWW! Star Wars + Firefly = Snark Wars. Who would be crowned the rogue-iest space rogue ever?