Dragon Ball GT (1996)

S1E47 The Greatest Surprise

As Goku braces for the inevitable, unexpected aid arrives from a surprising ally: Android 18, filled with rage. Fueled by the desire to avenge her fallen loved one, she channels her anger into a fierce assault on her brother, No. 17. The onlookers are stunned, oblivious to the fact that the most perilous force in existence is on the verge of being unleashed!