Stephen Colbert's 'Late Show' promos feature Mitt Romney and a Charlie Rose trapper keeper

Stephen Colbert Teams Up With Mitt Romney for New 'Late Show' Spot

Stephen Colbert is preparing for his return to late night, and he's got the help of a former republican presidential candidate.

While he won't be playing the part of a staunch conservative like he did on "The Colbert Report," the comedian did have Mitt Romney show up in one of his first promos for the new "Late Show."

WATCH: Stephen Colbert Shaves His 'Colbeard' in First 'Late Show' Promo

See what Colbert has been up to lately:

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Stephen Colbert's 'Late Show' promos feature Mitt Romney and a Charlie Rose trapper keeper
BEVERLY HILLS, CA - AUGUST 10: Host, executive producer, writer Stephen Colbert speaks onstage during the 'The Late Show with Stephen Colbert' panel discussion at the CBS portion of the 2015 Summer TCA Tour at The Beverly Hilton Hotel on August 10, 2015 in Beverly Hills, California. (Photo by Frederick M. Brown/Getty Images)
Television personality Stephen Colbert during a taping of Comedy Central's 'The Colbert Report' with U.S. President Barack Obama in Lisner Auditorium at George Washington University on December 8, 2014 in Washington, DC. This is President Obama's third appearance on 'The Colbert Report' that will broadcast its final show on Dec. 18. (Photo by Andrew Harrer-Pool/Getty Images)
Stephen Colbert, future host of the LATE SHOW, talks to David Letterman when Colbert visits the LATE SHOW with DAVID LETTERMAN, Tuesday, April 22 (11:35 PM-12:37 AM, ET/PT) on the CBS Television Network. (Photo by John Paul Filo/CBS via Getty Images)
Stephen Colbert speaks at the 2015 Monclair Film Festival, In Conversation With Richard Gere Hosted By Stephen Colbert at the Wellmont Theatre on May 2, 2015 in Montclair, New Jersey. (Photo by Paul Zimmerman/Getty Images for Montclair Film Festival)
Television host and comedian Stephen Colbert of Comedy Central's 'The Colbert Report' listens to a question as he testifies on US farm workers before the Subcommittee on Immigration, Citizenship, Refugee, Border Security and International Law on Capitol Hill in Washington, DC, on September 24, 2010. (Photo credit Saul Loeb, AFP/Getty Images)
Honoree Stephen Colbert attends the US-Ireland Aliiance's Oscar Wilde Awards event at J.J. Abrams' Bad Robot on February 19, 2015 in Santa Monica, California. (Photo by Alberto E. Rodriguez/Getty Images for US-IRELAND ALLIANCE)
Stephen Colbert, future host of the LATE SHOW, talks to David Letterman when Colbert visits the LATE SHOW with DAVID LETTERMAN, Tuesday, April 22 (11:35 PM-12:37 AM, ET/PT) on the CBS Television Network. (Photo by Jeffrey R. Staab/CBS via Getty Images)
Stephen Colbert, future host of the LATE SHOW, talks to David Letterman when Colbert visits the LATE SHOW with DAVID LETTERMAN, Tuesday, April 22 (11:35 PM-12:37 AM, ET/PT) on the CBS Television Network. (Photo by Jeffrey R. Staab/CBS via Getty Images)
Television personality Stephen Colbert smiles while taping the 'The Colbert Report' with U.S. President Barack Obama, not pictured, in Lisner Auditorium at George Washington University in Washington, D.C., U.S., on Monday, Dec. 8, 2014. This is President Obama's third appearance on 'The Colbert Report' that will broadcast its final show on Dec. 18. Photographer: Andrew Harrer/Bloomberg via Getty Images
Stephen Colbert is pictured with his wife. The Kennedy Center Honorees have dinner at the U.S. Department of State. Recipients to be honored at the 37th annual national celebration of the arts are: singer Al Green, actor and filmmaker Tom Hanks, ballerina Patricia McBride, singer-songwriter Sting, and comedienne Lily Tomlin. (Photo by Sarah L. Voisin/The Washington Post via Getty Images)
Stephen Colbert attends the 2014 Storycorps Gala Hosted By Stephen Colbert at Intrepid Sea-Air-Space Museum on October 9, 2014 in New York City. (Photo by Noam Galai/WireImage)
Stephen Colbert attends the 2014 Storycorps Gala Hosted By Stephen Colbert at Intrepid Sea-Air-Space Museum on October 9, 2014 in New York City. (Photo by Noam Galai/WireImage)
Talk show host Stephen Colbert introduces Gwen Stefani on September 3, 2014 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)
Stephen Colbert speaks onstage during the 66th Annual Primetime Emmy Awards held at Nokia Theatre L.A. Live on August 25, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
Stephen Colbert arrives to the 66th Annual Primetime Emmy Awards at Nokia Theatre L.A. Live on August 25, 2014 in Los Angeles, California. (Photo by C Flanigan/Getty Images)
TV personality Stephen Colbert attends the Legendary Pictures preview and panel during Comic-Con International 2014 at San Diego Convention Center on July 26, 2014 in San Diego, California. (Photo by Albert L. Ortega/Getty Images)
Stephen Colbert attends The Drama League's 30th Annual Musical Celebration of Broadway honoring Neil Patrick Harris on February 3, 2014 in New York City. (Photo by Andrew H. Walker/Getty Images)
Stephen Colbert attends the 2014 Shape & Men's Fitness Super Bowl Party at Cipriani 42nd Street on January 31, 2014 in New York City. (Photo by Tyler Kaufman/Getty Images)
Satirist Stephen Colbert speaks onstage at Robert F. Kennedy Center For Justice And Human Rights 2013 Ripple Of Hope Awards Dinner at New York Hilton Midtown on December 11, 2013 in New York City. (Photo by Stephen Lovekin/Getty Images for Robert F. Kennedy Center For Justice And Human Rights)
Satirist Stephen Colbert attends Robert F. Kennedy Center For Justice And Human Rights 2013 Ripple Of Hope Awards Dinner at New York Hilton Midtown on December 11, 2013 in New York City. (Photo by Stephen Lovekin/Getty Images for Robert F. Kennedy Center For Justice And Human Rights)
Satirist Stephen Colbert speaks onstage at Robert F. Kennedy Center For Justice And Human Rights 2013 Ripple Of Hope Awards Dinner at New York Hilton Midtown on December 11, 2013 in New York City. (Photo by Stephen Lovekin/Getty Images for Robert F. Kennedy Center For Justice And Human Rights)
LOS ANGELES, CA - SEPTEMBER 22: Stephen Colbert poses in the press room at the 65th annual Primetime Emmy Awards at Nokia Theatre L.A. Live on September 22, 2013 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
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Touting that he "can't wait" for the Late Show launch, Colbert vaguely reveals what viewers can expect from the show. "I'll talk about the news, tell jokes and have fascinating conversations with celebrities, athletes, musicians and, of course, politicians," he says before happening upon Romney.

"Wow, you do a great Mitt Romney," Colbert jokes to the politician. "That's it. Stay in character."

Romney got a joke of his own, quipping, "Where are my pancakes? I was told there would be pancakes."

In another promo, Colbert compared his"Late Show" debut to the first day of school. Explaining what's needed to host the show, he shows off his new back pack and Charlie Rose Trapper Keeper. "Dreamboat," he says of the "CBS This Morning" co-host.

The new "Late Show" may also feature some card tricks, according to this promo:

WATCH: Stephen Colbert Attempts a New Late Show Theme Song

The Late Show with Stephen Colbert premieres Sept. 8 on CBS. Will you be watching?

In the meantime, check out one of David Letterman's final moments on the beloved late-night program:

Watch David Letterman Say Goodbye on His Final 'Late Show'
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