Name a silent antagonist

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Listed-
"The Rocketeer has Lothar, The Dragon to Neville Sinclair. He only ever says three sentences and one word in the whole movie. This doesn't make him any less scary though."

"Tabuu from Super Smash Bros. Brawl doesn't say a thing throughout his entire storyline. While the other characters communicate through gestures and expressions, augmented by short grunts or exclamations (Snake is the only character to speak a full sentence) Tabuu doesn't say a thing. No Evil Laugh, no angry grunts, no screams of pain, nothing."

"Avatar: The Last Airbender has Combustion Man, who would rather blow stuff up with his mind than talk."

"Hong Kong Phooey once encountered a pickpocket who never spoke."

"Batman Beyond had the deadly assassin Curare, who never speaks in any of her episodes. Since Terry has a tendency to trade wisecracks throughout his fights, her silence, as well as her skill level, seems to draw an answering seriousness and maturity from Terry."

Unlisted-
Qualidea Code: Unless they're in human form, the Unknown are just mouth-less aliens that have no possible way of speaking.