Krim Steinbelt (クリム・スタインベルト Kurimu Sutainberuto?) was a scientist who invented and installed his conscious within the Drive Driver (ドライブドライバー Doraibu Doraibā?) after his "death" by the Roidmudes. He is affectionately nicknamed "Mr. Belt" (ベルトさん Beruto-san?) by his user, Shinnosuke Tomari. Krim serves as the support unit for Shinnosuke when the latter becomes Drive and can assist him later after achieving Shift Tridoron.