It has its own ego and is capable of speaking. Gray stores Add in a birdcage and usually keeps it hidden around the mantle inside the right sleeve. Its true function is to seal Rhongomyniad from losing its mystery.
It can change form into a giant scythe called Grim Reaper: The scythe of the Death God ( 死神の鎌グリム・リーパー , Shinigami no KamaGurimu Rīpā), which Gray can use as a weapon. The scythe consumes Spiritual Body and Magical Energy and it has the ability to convert physical boost to the owner.
