>>87232645he is the youngest Super Saiyan ever - and literally peaked in pre-school
Goten did not only inherit Goku's looks but also his carefree attitude; problem is if a character like that isn't the main character and thus isn't constantly thrown into mortal peril or has a bunch of friends to protect he just becomes a background character with no ambition
so always make sure your oshi is the main character in your life