Since 2008, the Marvel Cinematic Universe has been nothing short of a box office juggernaut. Seriously, it’s as though Kevin Feige cracked the code to the formula for printing money.

However, despite all its success, the MCU has routinely come up short when it comes to producing memorable antagonists. With the exception of the various Netflix series, it seems as though the MCU doesn’t quite understand what it takes to craft a truly menacing villain. Perhaps, though, part of the problem is the characters Marvel is relying on to stand opposite their heroes.

When you think about it, there’s still a plethora of untapped potential in Marvel’s extensive pool of rogues. Some, we’ve seen on-screen in one form or another; others have yet to make their live-action and/or big-screen debut. Whatever the case may be, there’s a pretty hefty list of names that fans would love to see either return or make their debut under the Marvel Studios banner. Some are inevitable; some may just be wishful thinking. Nevertheless, here are 10 Marvel Villains That Should Be Introduced into the MCU: