From Emil Chronicle Wiki

Grim Reaper is a level 60 monster.

[edit] Stats

Basic	Combat
Level 60 Experience 11,000 Job Experience 13,000 HP 24,000 SP 130 MP 367 Behavior  ???	Type Undead Boss Skill A.SPD 3.00 ATK 250 - 300 DEF 220 C.SPD 4.50 M.ATK 200 - 350 M.DEF 150
Properties Dark(50%) Item Drops Cursed Mask, Grim Ripper Scythe Skills  ??? Location  ???