Though it's lost its luster in the last few years, the Marvel Cinematic Universe has been undeniably influential, both in terms of the general entertainment industry and in terms of the public perception of superhero media. Over the course of a decade and a half, the MCU has managed to not only re-popularize iconic characters like Hulk, Captain America, and Iron Man, but also bring some more obscure heroes to the forefront, some of which have now become so popular that they've earned a spot on Marvel Rivals' launch day roster.