Although she's one of the lesser-known celebrities on the show, MMA fighter Song Ga Yeon definitely made her mark (literally) on her debut on SBS's 'Roommate'!

Trying to get closer with Jo Se Ho, one of her ten roommates on the show, they decided to give her a chance to show off her fighting skills. "I'm not that strong," she said, although her warm-up skills proved the contrary. 

Swiftly kicking the comedian in the shins, Jo Se Ho was knocked down to the ground as the MMA fighter profusely apologized. "I worried that you would ask me to keep doing it if I went too soft," she explained. "But that really wasn't that strong of a kick!"

Make sure to catch her on 'Roommate'! Watch the first episode here.

SEE ALSO: Singer Roy Kim mourns the loss of his friend Park Bo Ram in an emotional SNS post