My Hero Academia Season 6 Episode 15 English Dubbed Episode Title: Tartarus Episode Description: The All For One possessed Shigaraki and his army of Near High-Ends raid Tartarus, the maximum security prison in which the "dregs of society" are thrown in to never be released. They successfully destroy the main gate, killing the guards, and make their way toward the main facility on an island. While flying on a Nomu, Shigaraki attempts to regain control of his body, but his master's will remains stronger, telling him to rest and that he is to become "the next me". Using their shared consciousness, both All For Ones execute dual EMP attacks, shutting down the power in the prison from the inside and out. This results in all the prisoners being let free and proceeding to go on a rampage, which includes Muscular, Moonfish, and Stain; a female prisoner releases Overhaul out of his cell.