Why does Piccolo's appearance never change?

Firstly, Piccolo inherited his father's (King Piccolo's) eternal youth, giving him ageless immortality after reaching his physical prime and that is why his appearance is the same throughout the Dragon Ball series. read more

Firstly, Piccolo inherited his father’s (King Piccolo’s) eternal youth, giving him ageless immortality after reaching his physical prime and that is why his appearance is the same throughout the Dragon Ball series. read more

While training Goku's young son, Gohan, while originally only for to prepare for the coming Saiyans, Piccolo's heart and motives quickly begin to change as the boy takes his time to talk with Piccolo and have normal discussions that do not result in a violent outbreak, this stemming from Gohan agreeing on Goku's views of Piccolo now being more grumpy than truly evil. read more