Beware of Robot Dragon Ball: Doragon bôru : Season 1 Episode 51

Goku and Kuririn challenge the skeleton robot to a battle. However, the robot is strong! Goku is buried in rubble, and Bulma and Kuririn are cornered inside a building. Just as the two are in a hopeless situation, Goku emerges from the rubble and saves them! After Bulma and Kuririn run off, Goku performs a dive-bomb attack from the roof!! This makes even the powerful robot explode, and Goku follows after the two. However, Blue alters the sign left by Bulma and Kuririn!!