Kid Goku couldn’t even go Super Saiyan back in the day let alone Ultra Instinct. This sort of leap is hard to comprehend for anyone, so we can give Piccolo a break here.

Kid Goku Gets Realistic Dragon Ball Concept Art For the majority of his history, Goku has appeared to fans as a full grown man. Throughout Dragon […] ...

Goku is so ill-prepared for the outside world that he doesn’t even know his proper age. In a physical sense, Goku experiences a substantial change from the original Dragon Ball.