Klein Kiesling is the main protagonist of Atelier Iris: Eternal Mana and a young alchemist traveling the world. He was raised by his grandmother, Daphne, who left him her alchemy notebook.
Klein has come to Kavoc looking for alchemaic items and more information on alchemy. He is accompanied by his Wood Mana friend, Popo, when he met Lita Blanchimont, who leads him on a greater adventure than he ever thought possible.