The American Reunion actor will play a local celebrity realtor named Brad, who is an "almost" long-lost brother of Jimmy Chance (Lucas Neff), according to The Hollywood Reporter.
© PA Images / Dan Steinberg/AP
© Fox
Raising Hope follows Jimmy as he raises his infant daughter with help from his family.
The series also features Martha Plimpton and Garret Dillahunt as Jimmy's parents, Shannon Marie Woodward as Jimmy's love interest and Cloris Leachman as Jimmy's great-grandmother.
Klein will join previously announced guest stars including Melanie Griffith, Tippi Hedren, Wilmer Valderrama and Jenny Slate.
Season three of Raising Hope will premiere on Tuesday, October 2 on Fox.
Watch a promo for Raising Hope's second season below:
