I've been wondering who are the worst anime characters to ask for relationship advice. So far I thought of Yujiro Hanma from Baki, because he would absolutely invade your privacy in the worst moments and "coach", and Mei Mei from Jujutsu Kaisen because she would not only charge a lot of money for "consultation fees", but worse, her advice would be really really bad since she is both a sociopath and a groomer...
Goku is the ultimate deadbeat dad. He just keeps dying and when he's dead he doesn't try to come back to life but instead fucks off to fight in the afterlife tournaments.