The line comes from Micolash, Host of the Nightmare, a boss in FromSoftware's 2015 action role-playing game Bloodborne. In the Nightmare of Mensis, the mad scholar obsessively calls out to Kos, a Great One, and his rambling prayer became one of the game's most quoted moments. Clips spread through lore videos, boss compilations and reaction edits, where the strange name and whispered delivery made it instantly recognisable even to players who had never reached him. It endures as shorthand for cosmic horror, madness and hidden knowledge.