From Emil Chronicle Wiki

Crystal Urchin is a level 55 monster.

[edit] Stats

Basic	Combat
Level 55 Experience 560 Job Experience 610 HP 2,000 SP 300 MP 300 Behavior Passive, Cast Sensor (Range)	Type Rock A.SPD 2.00 ATK 150 - 220 DEF 100 C.SPD 2.00 M.ATK 200 - 300 M.DEF 55
Properties None Item Drops Metallic Stone5, Iron Thorn, Crystal, Platinum Lump, Metal Urchin Spine Skills Bubble Gas Location Light Tower (Main Floor 3F, A-7F)