sekomumasada_sensei
Full name: センチメンタル小室マイケル坂本ダダ先生 (Sentimental Komuro Michael Sakamoto Dada-sensei)
One of the more popular and recognized NPCs from Yume Nikki. His signature characteristics are his monochrome-ness, clothes that only expose his head and neck (And sometimes his hands), and severely lazy_eyes, both of which usually point away from each other diagonally. In the game, he's found inside of a strange, white spaceship that contains a piano beneath a panoramic view of space, a table and some chairs, and a bed.