Fans of Gary are delighted with the news of a possible return to "Running Man." However, Gary's return to "Running Man" is not for good. What's in store for the fans in Gary's upcoming return to the SBS variety show? Read on to find out.

According to Soompi, Gary's return to "Running Man" is part of the variety show's member race project wherein there will be a certain member to be featured for the week. Gary's turn to be featured in the "Running Man" member race project will be aired after fellow "Running Man" members, Song Ji Hyo, Kim Jong Kook and Ji Suk Jin episodes. This will be the first legit appearance of Gary in "Running Man" after he officially said goodbye in episode 324.

Many fans are intrigued about the mechanics and details of the member race project of "Running Man" since some parts of it are reportedly confidential. "It is true that Gary will be making a special appearance. Since this is a confidential project and he is a surprise guest, please watch the broadcast to see what we have prepared," said Lee Hwan Jin, "Running Man" producer.

Lee Hwan Jin further teased the fans that there is a huge secret and an upcoming twist in upcoming episodes. "The episode is set to air 2 weeks later so it's difficult for me to tell you the content of it but it was kept very secret so everyone was surprised. It will be filled with secrets and surprises so please look forward to it," he added.

Meanwhile, Yoo Jae Suk, Lee Kwang Soo, HaHa, Song Ji Hyo, Ji Suk Jin and Kim Jong Kook reportedly had no idea about Gary's temporary return to "Running Man" which was reportedly filmed on January 17. Catch Gary on "Running Man" January 29 episode and expect to see the reactions of the members upon learning of Gary's surprise return.