Talk:Ed, Edd n Eddy Z/@comment-96.231.5.4-20100831193649/@comment-2002585-20100831225437

Goku looked like an eight-year old kid, but was actually 12. Even at 15, he still looked to be no more than eight or nine. At 18, however, he looked about his age.

In short, they age half as fast as humans, on average.