Blackagar Boltagon, commonly known as Black Bolt, is a fictional superhero appearing in Marvel Comics. He is the king of the Inhumans, a race of superhumans with unique abilities. Black Bolt possesses a powerful voice that can cause massive destruction, making him communicate through sign language to avoid accidental harm. As a member of the Inhuman Royal Family, Black Bolt is often depicted as a noble and stoic leader. His character first appeared in Fantastic Four #45 in 1965 and has since been featured in various comic series, animated shows, and the Marvel Cinematic Universe.