Doktor G is Destron's first general in a knight armor who originated from Germany and was given charge to oversee their operations in Japan. He is the leader of the Mechanical Army. He wields a battle axe, a short sword, and a knife. In the comics, his scorpion-shaped helmet could transform into a deadly scorpion, but this never happen on TV. Most of his monsters are cyborgs that are the same type as Destron Leader's cyborgs. Pronounced his enemy's name "Kamen Raaaaida V3!". After numerous failures, Doktor G summoned the spirits of his dead, evil warriors to transform him into Crab Laser for his final battle with Kamen Rider V3. Despite putting up a good fight, he was destroyed by V3's V3 Tailspin Return Kick.