10 Essential Avengers Villains Not Yet Used In The Movies
4. Mephisto
Mephisto is an otherworldly entity who rules his own universe, which many refer to as Hell. He claims he is not the The Devil but considering he governs a realm engulfed in fire and tricks people into selling their souls to satiate his own evil desires, it's hard to tell them apart.
Even though the rumours that Mephisto would debut in WandaVision turned out to be unfounded, Marvel fans are eager at the idea of the malevolent demon joining the MCU. Although his power is astounding, it's his skills at persuasion that make Mephisto dangerous. He could crush the Earth with his pinky finger but he takes more pleasure in manipulating innocent people giving up their souls to him.
Because viewers are getting a little tired of watching the Avengers wailing on giant monsters and cannon-fodder armies, it'd be cool to see them square off against a foe whose manipulation skills can cause the superheroes to defeat themselves.
Also, introducing Mephisto could help bring in other hell-themed characters into the MCU such as Blackheart, Zarathos, Danny Ketch, Zadkiel, and the original Ghost Rider, Johnny Blaze.