Stephen Colbert's 'Late Show' Promos Feature Mitt Romney and a Charlie Rose Trapper Keeper

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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

Touting that he "can't wait" for thelaunch of his show, Colbert vaguely reveals what viewers can expect. "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 also got a joke in, quipping, "Where are my pancakes? I was told there would be pancakes."

In another promo, Colbert compared hisLate 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: 

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