Its really cool, but at the same time so out of character...Goku is really not as manly of a man as Kratos, is a perpetual man-child who enjoys fighting more than being with his wife and kids...and definitely does not have a deep voice like Kratos. Goku would probably be exhilarated at the propect of fighting another strong person...he would be so happy, he would gladly leave home to fight Baldur and leave his son behind. If Goku isn't able to defeat baldur he would be so excited and be like Wow! You're really strong! Can I train with you? And leave his family behind for months or years to train with Baldur.