The Demoralizing Return: Better than Ever

Gt doesn't count in this fic, so the last time we seen Frieza, along with Cell, Dr Gero, and others watching the final battle between Goku and Kid Buu. After Buu's resurection within Uub as a baby, the others divised their own plans for revenge. Dr Gero dismantled Android 19 and took some uneccessary parts off of Cell. He then assembled them all into one new Android, caleed Android Zero.