After the Inhumans denied the tribute to Corvus Glaive, Thanos personally visited Black Bolt in Attilan. Finding the Inhuman city empty, with only Black Bolt left, Black Bolt unleashed a powerful scream which tore down Attilan itself and activated a Terrigen Bomb which spread the Mists across the Earth.

Can Black Bolt scream?

Black Bolt, full name Blackagar Boltagon, first appeared in Fantastic Four #45 by Stan Lee and Jack Kirby. ... Black Bolt's powers are simple but incredibly deadly. He possesses the hypersonic scream, meaning that when he talks he unleashes a tremendously powerful blast capable of destroying planets.

What happens when Black Bolt yells?

Black Bolt's signature power is his voice, as his electron-harnessing ability is linked to the speech center of his brain. Speaking triggers a massive disturbance in the form of a highly destructive shockwave capable of leveling a city.