Dragon Ball - episode 59 - 21 Apr, 1987

General Blue enters the RR base and Commander Red. Despite procuring the dragon radar, Red is displeased with Blue and offers him a second chance if he can defeat Mercenary Tao, which he fails and Mercenary Tao easily kills him. Meanwhile, Bora tells Goku the legend of the Korin Tower. After being briefed on his target, Tao travels on a flying pillar to Korin's Land. As Goku, Bora and Upa are enjoying themselves, Tao storms in and Bora fights him. Bora is killed by Tao, leaving Upa in grief and Goku in anger.  (Source: Wikipedia)