Comic-Con: 'Family Guy' Enlists Kate McKinnon as Peter's Sister

Ed O'Neill, Glenn Close, Kyle Chandler, Cosmos' Neil deGrasse Tyson will also lend their voices this season.

Family Guy will introduce another member of the Griffin family this coming season.

Saturday Night Live star Kate McKinnon will lend her voice as Peter's sister, a professional female wrestler who goes by the wrestling name Heavy Flow, the animated comedy's creative team announced Saturday at Comic-Con.

Executive producers Seth MacFarlane, Mike Henry, Rich Appel and Steve Callaghan, joined by voice stars Seth Green and Alex Borstein, revealed a slew of upcoming guest stars including Ed O'Neill, Glenn Close, Kyle Chandler, Cosmos' Neil deGrasse Tyson and Fox Sports broadcaster Joe Buck. Singer John Mellencamp will not just lend his voice, he'll sing a song in which he pokes fun at himself, according to the exec producers.

Other storylines teased for the upcoming season include an episode in which Chris becomes a registered sex offender and an episode in which the gang discovers that Quagmire was once a Korean soap opera actor and travel to Korea to find the last episode of his series. An entire act of one upcoming episode will take place inside Stewie's sleeping mind when he has his first nightmare and becomes determined to confront his demons head-on.

The team also unveiled a new trailer for Season 14:

The new season of Family Guy premieres Sunday, Sept. 27 at 9 p.m. on Fox.

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