but what changed Piccolo was having a son 🤔
Vegeta changed after the 'humbling' that was Freeza wreckin' his shit before bearin' witness to the first super saiyan in that damn carrot
(never watched pervy-ass Dragonball and don't plan to 🤷🏿♂️)
Both Piccolo and Vegeta changed after getting a second chance from Goku and understanding how Goku's nobler way of life could bring happiness and even strength to them.