"Pure Fighter" mentors to appear as guests on "Running Man"

Choo Sung-hoon, Kim Dong-hyun, Jung Chan-sung, and Choi Doo-ho, the four mentors of SBS's "Pure Fighter," will appear as guests in "Running Man."

The four fighters were guests of Running Man's first filming in new year, and announced a strong start by unexpectedly striping off the name tags from the start. The members from two variety shows created another legendary race with fierce competition in the ring.

The special episode "Running Man X Pure Fighter" will be released in January. "Running Man" airs every Sunday at 6:20 pm KST.

"Pure Fighter" is a martial arts variety that finds applicants with hidden warrior hearts and shares a journey to become real fighters through special skills and mental coaching.