Black Bolt's first appearance established the character as being a member of the Inhuman ruling class.Fantastic Four #45–46 (December 1965 – January 1966). Marvel Comics. The title Thor featured a back-up feature called "Tales of the Inhumans", which recounts the character's origin story. The son of King Agon and Queen Rynda, Black Bolt is exposed to the mutagenic Terrigen Mist while still an embryo, and eventually demonstrates the ability to manipulate electrons. To protect the Inhuman community from his devastating voice, Black Bolt is placed inside a sound-proof chamber and is tutored in the use of his powers. Reentering Inhuman society as a young man—having vowed never to speak—the character is attacked by his younger brother Maximus, who attempts, unsuccessfully, to goad him into speaking.Thor #146 (November 1967); #148–149 (January – February 1968); #152 (May 1968). Marvel Comics.
