K.J. Yossman “Mad Men” star Jon Hamm is returning to Amazon Prime Video for season 2 of “Good Omens.”Hamm will reprise the role of Archangel Gabriel in the series, which is currently in production in Scotland.Also returning are Doon Mackichan (“Toast”), who plays Angel Michael, and Gloria Obianyo (“Dune”) as Uriel.They will be joined by new angels Liz Carr (“Devs”) who plays Saraqael and Quelin Sepulveda (“Havoc”) as Muriel.