Zatch Bell is a mamodo who is one of the two sons of the Mamodo King Dauwan Bell that has lost all memory of his past but with the help of his partner Kiyo they set off to make Zatch the Mamodo King. Battling obstacles Zatch says that he will always be Kiyo's shield so that Kiyo won't get hurt or the book be burned. He promised to Kolulu, a mamodo who was made to fight against her will that he will be a kindhearted king so that they don't have to fight any more battles to decide King of Mamodo World. His power is lightning and his book is red. He is six years old. (Zatch Bell Wiki)