Michael is a father who abandoned his kid, and Walt is the fatherless child being raised by his grandmother.
Ok first of all to fit stereotype, Walt would be the fatherless child raised by the baby mama.

Have you watched since season one? Michael never abandoned Walt. He let his bitch ex-gf guilt trip into allowing her to take Walt cuz her man had so much money and could raise him better. Then he changed his mind about letting her keep Walt and got hit by a car. BAM! THEN he made the mistake of letting Walt know what he did on the island and I guess Walt was freaked and wanted to stay with his grandmother. Non-black folks do the same stupid shit.
And Walt continues to be raised by Grandma cuz Michael's DEAD.