For other versions of this character see:
Puffurle is a minor demon the fused with a human girl named Massami Izumi.
Puffurle was a humanoid demoness that resembled a sheep. She was covered in white fur, leaving only her face and hands without fur. She has long flopped ears going down to her neck.
Its unknown when Puffurle fused with Massami, however its likely during the mass demon suicide run when Puffurle ended up being overpowered by Masami's gentle nature.