FOX's Sunday night animated comedies are set to deliver some top line guest star voices this coming season - with Jane Fonda, Willem Dafoe, Nick Offerman, Julie Bowen, Liam Neeson, Allison Janney, Kevin Kline, Zach Galifianakis, Kim Kardashian, Megan Mullally, Bill Hader, Aziz Ansari, Jordan Peele and Keegan-Michael Key being some of the voices featured.

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The Simpsons and Family Guy are set to kick off their new seasons on Sunday, September 28 - with Family Guy's episode being the special one-hour Simpsons crossover where the Griffins visit Springfield.The Simpsons' new season will feature guest stars Jane Fonda (The Newsroom), who will play Mr. Burns’ girlfriend, Democratic Assemblywoman Maxine Lombard; Willem Dafoe (The Grand Budapest Hotel) as Bart’s new bully-of-a-teacher, Mr. Lassen; and Futurama’s Billy West, John DiMaggio, Katey Sagal, Maurice LaMarche, Phil LaMarr, Lauren Tom and Tress MacNeille in a crossover episode between the two series.Additional 26th season voices include Nick Offerman (Parks and Rec), Sarah Silverman (A Million Ways to Die in the West), David Hyde Pierce (Frasier), comedian Jeffrey Ross and musician Matthew Sweet. Plus, Judd Apatow (Girls, Anchorman 2: The Legend Continues) pens a special episode scheduled to air later in the season.Family Guy's new season will include voices from Liam Neeson (Taken), Julie Bowen (Modern Family), and Allison Janney (Mom). Bob's Burgers, which will return Sunday, October 5th, will feature seasonal guests Kumail Nanjiani (Silicon Valley), Jenny Slate (Married), Rachel Dratch (SNL), Zach Galifianakis (The Hangover), Kevin Kline (Last Vegas), Aziz Ansari (Parks and Rec), Bill Hader (SNL), Carl Reiner (Ocean's 11), Molly Shannon (SNL), Joe Lo Truglio (Brooklyn Nine-None), and Key and Peele's Jordan Peele and Keegan-Michael Key. American Dad airs the first of its final three FOX episodes ( before moving to TBS ) on Sunday, September 14th. The final FOX episode (on September 21st) will feature guest stars Kim Kardashian, The Walking Dead's Steven Yeun, and The Strain's Cory Stoll.Plus, in another piece of new FOX animation news, Hank Azaria (The Simpsons) has been cast as Bud Buckwald, the lead voice role on Bordertown, the new animated comedy from Family Guy’s Mark Hentemann and Seth MacFarlane. Azaria joins the previously announced voice cast of Alex Borstein (Family Guy), Missi Pyle (Gone Girl), Judah Friedlander (30 Rock), Nicholas Gonzalez (Sleepy Hollow) and guest voice Efren Ramirez (Napoleon Dynamite).Bordertown takes a satirical look at the cultural shifts occurring in America. Exploring family, politics and everything in between with a cross-cultural wink, the series centers on two very different families living in a fictional Southwest desert town on the U.S. - Mexico border. Azaria’s Bud Buckwald is a married father of three and a Border Patrol agent who is just a tad behind the times and feels slightly threatened by the cultural changes transforming his neighborhood. He lives next door to Ernesto Gonzalez (Gonzalez), an ambitious immigrant and family man, who has been in the country less than 10 years, but is already doing better than Bud – which, it turns out, is a bit of an issue for the less-industrious native.Bud is married to Janice (Borstein), both the wisest and most oblivious member of the family. The Buckwald kids include Becky (Borstein), a socially awkward, big-boned geek; Sanford (Friedlander), a loser who thinks he’s a player; and Gert (Pyle), a beauty pageant-obsessed five-year-old with a pet pig. Meanwhile, living the American Dream next door are the Gonzalezes, including Maria, Ernesto’s wife; their son, Ruiz (Ramirez); and their 21-year-old nephew, J.C. (Gonzalez), a recent college graduate.

Matt Fowler is a writer for IGN. Follow him on Twitter at @TheMattFowler and Facebook at Facebook.com/Showrenity