User blog comment:CookieKid247/Differences between Kid Goku and Kid Goten (Appearance-Wise)?/@comment-3097771-20130315205420

Goten is slightly taller and thinner. Goten also has different eyes. While Goku's are round, Goten's are flat on the bottom and more egg shaped. I think it's easy to tell them apart mainly because Toriyama's style got cleaner and richer as he progressed. So Goten will always look new, and kid Goku always looks dated. They also tend to wear different clothes. I don't know that kid Goku wore his orange gi with the blue under it very much (or at all). He never wore the clothes of #1 or #4 either.

And I don't know who made that fourth picture of Goten, but it looks like absolute shit. -KidVegeta (talk)