Dr. Tofu Ono is a chiropractor who runs a clinic in Furinkan. He has known the Tendo family for many years and is in love with Kasumi Tendo. Whenever he is around her he loses the ability to focus on whatever he is doing and acts very strangely.
In the English dub version of the anime, he was originally voiced by Ian James Corlett. From episode 113-161 he was voiced by Kirby Morrow.