Kim started her career in 2011 through KBS's open audition system, as one of the channel's 26th generation comedians.[2] Her first Gag Concert role was as a "super strength girl" in "Superstar KBS", which Kim herself described as a cute role; the part was repeatedly edited out after two broadcasts.[4] In 2011, she took the role of a substitute actress in "She, The Ultimate Weapon", which was based on a skit she had shown off when first auditioning for KBS.[5] Kim did not have any lines during it.[4] Her role, where she demonstrated feats of strength while taking over scenes for a top actress,[6] drew comparisons to Kim Byung-man, and she was dubbed "the female master" (referring to Kim Byung-man's character in Gag Concert's "The Master").[5] Originally, the feats she showed off were more strenuous, but at the worries of her peers she "lowered the level to fit for broadcast".[7] Kim sustained many injuries while "She, The Ultimate Weapon" ran;[2] she stated in an interview with TV Daily that she had once went to the hospital before a recording.[8]
Kim's next role after "She, The Ultimate Weapon" was in "War on Broadcasting", a parody of the film Nameless Gangster: Rules of the Time.[8][9] Cast when the sketch was just being finished,[8] she dressed as a man and played a parody of Kim Sung-kyun's character.[9] Afterwards, she appeared in sketches such as "Wait, Wolf", "Bboom Entertainment", and "Daddy's Girl".[9] Her role in the sketch "Drunken" was a change to a more feminine and sexy image; in it, she wore a dress and donned long hair.[9][10]
In October 2014, it was revealed that Kim had left to Germany after wrapping up a Gag Concert segment.[11] In an appearance on Radio Star, she stated that she went to Germany "in order to die", dissatisfied with her "menacing" image.[12] While in the country, a friend introduced her to Stefan Siegel, whom she would marry in 2018.[13]