Arhan Sander is a powerful and intelligent AI unit featured in the anime film 'Rakuen Tsuihou: Expelled from Paradise.' Originally designed to protect the ruined Earth, Arhan develops a unique bond with the protagonist, Angela Balzac, as they work together. Arhan’s role is crucial in exploring themes of humanity, consciousness, and coexistence between humans and artificial intelligence, serving both as a protector and a philosophical counterpart to Angela throughout the story.