Possession works for most BOSS monsters. For example: heavenly leaders, forbidden demons, rebellious demons, Zuma leaders, undead leaders, blood demons, double-headed hunger, psychic corpse kings, demon hunters, King Kong people, magic shadow giants, sacred beasts, buddhas, and god beasts.

Possession is a very powerful skill, through which you can gain powerful strength and skills, and at the same time you can increase your offensive and defensive ability, so possession is effective for most BOSS monsters.