From Emil Chronicle Wiki

Geister is a level 57 monster.

[edit] Stats

Basic	Combat
Level 57 Experience 1,050 Job Experience 730 HP 2,100 SP 58 MP 97 Behavior  ???	Type Magic Creature A.SPD 2.50 ATK 210 - 280 DEF 100 C.SPD 2.50 M.ATK 170 - 230 M.DEF 80
Properties Dark(20%) Item Drops Spirit Dust, Wisp Dust, PopPop Powder, Prasm, Strength Crystal Skills  ??? Location  ???