In 2009, Tomu Kawa-Musuko possessed Kodi and entered the Grey Room, where Makura was. After a short discussion, Tomu caused Makura to be chained to the ceiling of the Grey Room, and left him there for seven long years.
When Burukku, Neisan, Aron, and Kodi came into the Grey Room, he engaged in a conversation with them, vaguely explained the Ningoth, and broke the fourth wall. Afterwards, they left while he was muttering.
Not much is known about Makura's personality, though he's usually very calm and laidback.
'Makura' is japanese for 'pillow', 'Kodi' also means 'pillow'.