If you've already seen Black Panther, then you know that despite being the character who links that movie to the earlier installments of the MCU, Ulysses Klaue, as played by Andy Serkis, isn't exactly the major villain of the movie. In fact — and here's your spoiler warning if you haven't seen it yet — he makes a shocking and unceremonious exit from the film about halfway through to make way for the Panther's real enemy, Erik Killmonger. There's a reason that red herring works so well, though: in the comics, Klaw, with his name spelled in a slightly more supervillainous way, is one of Black Panther's most enduring arch-enemies.
Like the version in the films, Klaw was an amoral arms dealer and assassin with a keen interest in vibranium, and he even sported that sonic "arm-cannon" in place of his left hand. The big difference, though, is that his powers didn't stop there. In a desperate effort to gain superpowers that would make him the equal of the Fantastic Four, Klaw leaped into a machine designed to refine vibranium and was transformed into a being made of living soundwaves. While that first appearance would end with Mr. Fantastic beating him up with vibranium knuckles (which is awesome), it launched Klaw on a supervillainous career that saw him battling against the FF, Daredevil, and Black Panther, an enmity that would see him forming an army of supervillains to invade Wakanda itself.
The question, then, is whether the movie Klaue's extensive exposure to vibranium, and the fact that we never actually see what happens to his body, indicate that he's going to make a return in a form that's a little closer to his comics counterpart. It's not a bad bet to make, either. As good as Serkis is in the role, and as nice as it is to see his actual face in a movie for once, we suspect that you don't hire the world's most famous motion-capture actor if you're not planning on turning him into a being made of pure sound.