Dragon Ball - episode 39 - 18 Nov, 1986

Ninja Murasaki releases Android 8 to fight Goku. Android 8 however refuses to fight. Murasaki threatens Android 8 with a remote to set off a bomb inside him. Goku stops Murasaki, destroys the remote and beats the ninja. Goku has walked into a labyrinth but cannot find a way past. Android 8 comes to repay Goku with help to get past the maze. Goku nicknames Android 8 "Eighter". They easily stop approaching soldiers. Finally they manage to get past the trick wall at the end of the maze. They find General White waiting for them in the 6th floor command room. General White won't give up and drops Goku and Eighter down a trapdoor. (Source: Wikipedia)