Banpei is a robot built by Skuld. His original job was to guard the temple from the demon Mara. Due to later circumstances Banpei feels it his now his job to watch Keiichi and prevent him from putting the moves on Belldandy. Banpei has changed dramatically through out the series. One of the abilities he has is to go into different modes. He also was later on able to self-program himself and gains the ability to love. Unable to show emotion Banpei uses marker to draw various expressions on to his face. Banpei has a number of weapons to choose from to protect the temple from demons and to "protect" Belldandy from Keichi. Banpei has gradually gained many new abilities as Skuld continues to create new add-ons or functionality for him.