From Emil Chronicle Wiki

Most Powerful Evil is a level 43 monster.

[edit] Stats

Basic	Combat
Level 43 Experience 23,100 Job Experience 9,900 HP 18,000 SP 126 MP 342 Behavior  ???	Type Animal Boss Skill A.SPD 6.80 ATK 360 - 500 DEF 140 C.SPD 6.60 M.ATK 300 - 450 M.DEF 60
Properties Earth(30%) Item Drops Fur, Name Tag, Catty Booster, Strongest Evil Creature Stamp Skills  ??? Location Dead Mine