Dr. Kuseno

Dr. Stench is a scientist of justice who transformed Genos into a cyborg.

Appearance
Stench is an elderly man with strange facial features. He has elongated ears, a large nose, thin light eyes, and a thin frame. Perhaps, the oddest feature of his body is his hair, which is cut in to a bowl and protrudes away from his head.

Personality
He is a father figure to Genos, expressing his concern for the latter. He always reminds him of not being reckless all the time and that they are together in their battle.

History
4 years ago, Dr. Stench passed Genos' destroyed hometown, pursuing the mad cyborg who rampaged it. However he took Genos with him, who begged to transform into a cyborg, to which Dr. Stench complied to and modified him into a cyborg. He was promised by Genos that he would find the mad cyborg and destroy him.

King Arc
After defeating G4, Genos went to him and brought some of its parts. Amazed by what the latter has brought, Genos expresses his desire to become stronger and wants to use the parts if possible. Dr. Stench further states that Genos's master has given Genos a very reckless goal and asks whether Genos can bring Saitama the next time Genos comes. Expressing his concern for the young cyborg, he also asks him about the current whereabouts of the cyborg that they're seeking. Genos replies nothing but expresses his hatred and would want to destroy it. Seeing this, Dr. Stench reminds him that he is not alone in his fight and not to be reckless.

Abilities
Dr. Stench possesses a great intellect, having created Genos' cyborg body on his own.