User blog comment:Kaido King of the Beasts/The Child Who Shook the World/@comment-25926617-20151003182558

Its possible that the death of Weeble was the reason why WB wanted a family that he could protect. Maybe some person 'killed' his wife and son and then he set out to become stronger so he could protect his family. I do think that he is the son of WB but like you said that is not his mom