Daiki Kaito (海東 大樹, Kaitō Daiki) is an inter-dimensional thief and traveler who transforms into Kamen Rider Diend (仮面ライダーディエンド, Kamen Raidā Diendo, Masked Rider Diend). Daiki Kaito is the brother of Junichi Kaito, hailed from the World of Diend. He was working under Fourteen and he was tasked to capture Glaive, Larc, and Lance. He then discovered that his brother is a Kamen Rider. After Junichi was captured, Fourteen showed Daiki how he brainwashed Junichi to serve under him, in which Daiki was
