The Fall of Muscle Tower Dragon Ball: Doragon bôru : Season 1 Episode 41

After being beaten up by Goku, White guides the two of them to the mayor’s room. The second Goku and Ha-chan let their guard down, he takes the mayor hostage! Ha-chan doesn’t know what to do. Goku is downed after being hit with a single shot from the powered gun!! The second shot will finish him off. However, Ha-chan acts as a human shield and protects Goku!! With White in a panic, Ha-chan’s punch explodes!! Having saved Goku and the mayor, Ha-chan destroys Muscle Tower.