Well, i can tell you and make u understand, When your Vanil is evolved, and is Loyal, and you get him to 99, he will learn the Skill Bio Explotion, that skill will hit har, and depends on the Vanil HP the Damage he will deal, once you make that Skill, you will have to Ress him and he will be on Intimacy 0, that means, he will Hate you, and, you have to feed him again to Loyal in order to make the skill again. I havent do it again, since i dont wana feed him again, but, your in risk that he abandom you if you do the skill Many times