Gohan's relationships with Goku and Piccolo are complex and yet simple all at once, but Piccolo was the one who stepped up.
While Goku has a polarizing relationship with his sons, he is shown on occasion to be a caring and attentive father. However, one scene in Dragon Ball Super chapter #103 puts him in a truly bad ...
Of course, staying ahead of someone like Goku is not an easy task, and Gohan's strength tends to fluctuate heavily depending on his training regimen, so he rarely keeps his lead over his father.