While impressive, the fiend is far worse. I would go into explanation, but it's too long. In a book that has the fiend as the main enemy, he even can ignore the commands of those that summoned him, but since he is quite literally the devil, I have more freedom than the book that is his namesake. Also, I'd like to inform you that Salazar's training allows him to override your character's ability that lets him have influence over him.