The "I Like Sundays - Running Man" guest Ryoo Seung Soo got Lee Kwang Soo's last name wrong. On the SBS entertainment program "I Like Sundays - Running Man" which aired on April 13, 2014, each of the Running Man team members invited a guest and went on a trip together using public transportation. After completing the mission for the first day, the Running Man members had dinner together. When they were resting after dinner, the production team surveyed them to ask them about their true feelings for their partners. On the survey, there was a question, "If you could change your partner, who would you want to be partnered up with?" Ryoo Seung Soo wrote down Kim Kwang Soo, instead of his real name, Lee Kwang Soo, and made him bewildered.