Cobalt

Cobalt (a.k.a. jetto) was the brother of Astro Boy, he apprers in both the 1960's and in the manga series. he is a rather rough copy of Astro to defuse a H-bomb that was accidentally dropped to the bottom of a sea. Cobalt had every Secret power and had exactly same IQ that Astro has, but Cobalt was not as patient as Astro, so he was not capable of defusing any mechanical devices.