You're probably familiar with the Funko line of toys and collectibles. The most popular line probably being the Pop! figures characterized by large heads, tiny bodies, and solid round eyes. You can find Funko Pop! figures all over the place, with characters represented from across the collector spectrum -- from Star Wars, to Cowboy Bebop, to Gilmore Girls, to Guns N' Roses, and yes also to Marvel. And it is with Marvel that Funko is collaborating on animated shorts to promote both brands and their other collaboration, the Loot Crate-like subscription service called Collector Corps in which you can get exclusive Funko merchandise.
The first animated short (and we do mean short -- 90 seconds) features Funko versions of Loki, Iron Man, and Spider-Man. It's titled "Spellbound":
Also we did say "first". Spellbound is the first of three planned shorts, the next short will feature Rocket Raccoon, Groot, and (probably) the Collector and will release on December 7. The third short will feature Deadpool and Venom and will drop on December 14. Funko's Mark Robben said that there can be more shorts if reaction to them is good.