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During the "Infinity" storyline, Black Bolt was visited by Thanos' Black Order in order to demand a tribute, the heads of Inhuman younglings between the ages of 16 and 22 or the annihilation of Earth's inhabitants. Using the Terrigen Codex, Black Bolt discovered Thanos used the tribute demand as a cover for his true mission: to kill his secret Inhuman-descendant son whose identity and location were unknown even by his father. 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. Thanos survived the attack and found Black Bolt still alive in the rubble. Thanos demanded to know the location of his son. Black Bolt refused and continued attacking Thanos with his voice until an enraged Thanos knocked him out. Black Bolt was held captive for Thanos to use his power to activate the Illuminati's anti-matter bombs to destroy the Earth. When the Illuminati arrived in the Necropolis, they found Thanos' general Supergiant, with Black Bolt under her control as she uses Black Bolt to defeat them. When Supergiant activated the bombs, Maximus appeared with the trigger. He triggered the bombs, but also used Lockjaw to transport the anti-matter bomb along with Supergiant to a distant uninhabited planet where she died in the explosion. Black Bolt was liberated and left the scene along with Maximus and Lockjaw. In the ancient location of Attilan in the Himalayas, Black Bolt hid the Terrigen Codex and made Maximus understand his survival and that of his brother were to be kept a secret. Maximus also deduced that Black Bolt was always going to activate the Terrigen Bomb irrespective of Thanos' arrival which was to herald a new age of the Inhumans. After being examined by Maximus, Black Bolt discovered with his brother that the Terrigen Bomb had greatly diminished Black Bolt's powers. Black Bolt and Maximus agreed to keep this a secret.