[1] Kim and Haha are regular cast members on the variety show Running Man, which started airing in 2010, and they have been called its favorite "duo.

"[2] Although Yoo Jae-suk is the star of the show, Kim and Haha have been written of as the "spice" of the show, with references to Kim's "boyish likeability, upbeat personality and masculinity" and Haha for "his insatiable sense of humor and free spirit," and together are called "the musical duo.

[6] Kim's 2012 comeback, break from his hiatus from the music industry album, "Volume 7 - Journey Home" included the track "Words I Want To Say To You" featuring his Running Man members Haha and Leessang's Gary.

[14][15] These two concerts, advertised in posters as "2014 Kim Jong Kook and Haha Running Man Bros' US Tour,"[2] started off with a video shoutout from Running Man fellow cast members Yoo Jae-suk, Lee Kwang-soo, Ji Suk-jin, Gary, and Song Ji-hyo with their congratulations for the duo's first U.S. tour.

The concerts included some of their songs like Haha's "You're My Destiny," Kim's "Lovable," and older hits from Turbo; along with English covers of Bruno Mars's, Just the Way You Are, and Jay-Z and Alicia Keys's Empire State of Mind, to interest the American audience.