Kerarin

Kerarin ケラリン (Kerarin) is a kaiju created by Toho that first appeared in episode 4 of Warrior of Light Diamond Eye, The Hurricane Plan's Preparations are Complete.

Appearance
Kerarin is a blue Zensei Majin, with a somewhat humanoid appearance. He has yellow-colored hair, and wears a white coat. Kerarin also wields a sharp weapon.

History
Warrior of Light Diamond Eye

Kerarin is a member of the Zensei Majin, created by King Cobra.

Knife
Kerarin wields what seems to be a sharp blade, or possibly a knife.