While trying to teach Chris about his Irish roots, Peter stumbles upon Nate Griffin, a black man in his family tree. Peter tries to embrace his new-found heritage, but can’t quite get the hang of it. When Lois’ father, Carter Pewtershmidt, sits the Griffin kids down for a look at his family genealogy, a dark secret is uncovered.
Seth MacFarlane
as Peter Griffin / Brian Griffin / Stewie Griffin / Glenn Quagmire / Tom Tucker (voice)
Alex Borstein
as Lois Griffin / Tricia Takanawa / Loretta Brown / Barbara Pewterschmidt (voice)
Mila Kunis
as Meg Griffin (voice)
Seth Green
as Chris Griffin (voice)
Patrick Warburton
as Joe Swanson (voice)
Arif Zahir
as Cleveland Brown (voice)
Wally Wingert
as Y2K Crown (voice)
Meredith Scott Lynn
as Girl (voice)
Tara Strong
as Cindy / Waitress / Girl (voice)
Gary Cole
as Cop / Coach (voice)
Kevin Michael Richardson
as League Member #2 / Black Professor (voice)