Special Guest Stars Edie Falco as Celeste Cunningham Gladys Knight as Herself Edward Herrmann as Walter Guest Stars Maulik Pancholy as Jonathan Co Starring Kevin Brown as Walter "Dot Com" Slattery Grizz Chapman as Warren "Grizz" Griswold Toby Huss voices Deutsche Stimme Julia Barnett as Charlotte James Cavanagh Burke as Coal Miner James Arden as Detlef Uncredited Marisa Pierini as Popstar
