Magnolia Stevens and grown-up Alaiyah Stevens played by Lovie Simmons

Wes Gibbins, Chrisopher Castillo played by Alfred Enoch

Alaiyah and Wesley Jr. played unknown babies

Toddlers:

 Grown-up Wesley Jr. played by Keith Powers

Martin Stevens played by Idris Elba

Marjorie Stevens played Angela Bassett

The rest of htgawm cast as themselves