Every Major Marvel Character Who Has Died in the MCU Share Every Major Marvel Character Who Has Died in the MCU After more than a decade and over 20 movies, the MCU has killed off quite a few major characters. Starting in 2008 with Iron Man, the Marvel Cinematic Universe has presented the world with one of the biggest entertainment franchises in history. This is not limited to the silver screen either. With the MCU expanding to TV with shows like WandaVision, it is about to be an all-encompassing, multi-headed beast. Through its first three phases and more than a decade, there have been some tragic losses along the way. And some not so tragic, as quite a few bad guys had it coming. Point being, death has been a big part of the MCU during its lifespan.