The Avengers have faced off against the worst enemies imaginable. That's part and parcel of the job when it comes to a team that has the nickname of Earth's Mightiest Heroes, but not all of their foes are created equally. Some Avengers villains talk a big game but are little more than cannon fodder. However, others make the team earn their victories because they're the deadliest foes around.
Source：https://www.cbr.com/avengers-deadly-villains/
