His name is Behemoth.Hes actually part demon and likes to disguise as a so called dog with a“Halloween mask”.Behemoth is extremely protective of those he loves so far to killing people that harm them.Behemoth likes using his big strong buff form,no one knows why.The mask fused on his actually holds his soul,if it damages,he has to go back in his normal pup form.If its too heavily damaged or destroyed,he dies.Hes actually very friendly and likes to hug people,but alot fear him cause of his size.