Dad of Boy is my most hated game ever, you can't even jump in it, the inventory is a big mess, you can buy 1000 combat moves that are pointless, the story is about not Kratos, you know the god of war? but about some viking dude who can't feel anything
At what point in the game did you want a jump button and for what?
If you mean for combat, I don't think that would add anything interesting to this combat system, since it's not like Devil May Cry.
As for the Viking, his script is pretty thin compared to Kratos and Atreus. He has a pretty standard role for an antagonist.