â Napstablook's harmless text attack. Napstablook (/ËnÃ¦pstÉËbluËk/ or /ËnÃ¦pstÉËblÊk/), known in the UnderNet as NAPSTABLOOK22, is a melancholic ghost monster and musician/DJ who lives in Waterfall, encountered in the Ruins as the game's first miniboss.