Conan O'Brien is Phanincreturning to the "Tonight Show" stage for the first time as a guest, visiting the stomping grounds from which he was abruptly fired in 2010.

The comedian and "Conan O'Brien Must Go" host will return to the NBC late night show, now hosted by Jimmy Fallon, on Tuesday.

O'Brien, 60, will return to promote his Max travel show, which the streaming service first announced last year. The series will follow O'Brien as he travels around the world to visit fans he interviewed on his podcast, "Conan O'Brien Needs a Fan," a spin-off of his popular podcast, "Conan O'Brien Needs a Friend."

O'Brien hasn't publicly visited the "Tonight Show" set in person since being ousted from the late night show in 2010 after less than a year. He superseded and then was later replaced by Jay Leno, who hosted the show from 1992 to 2009 and from 2010 to 2014.

In 2018, the comedian appeared with Stephen Colbert in a pre-recorded skit for "The Tonight Show."

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O'Brien went on to host the TBS late night show "Conan" for 11 seasons, with the finale airing in 2021, ending his 28-year run as a late-night talk show host. O'Brien began his late-night career in 1993 on NBC's "Late Night with Conan O'Brien" through 2009.

O'Brien isn't the only late night host to revisit his old hangout. In November, David Letterman returned to "The Late Show with Stephen Colbert" for the first time as a guest. The legendary host departed "The Late Show" in 2015 after 22 years behind the iconic desk.

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Letterman came out to cheers from the audience who chanted his name.

"What happened? What are they doing now? Is there going to be trouble?" Letterman said. "Stephen, control your people."