On the October 21 episode of SBS’s “Master Key,” many popular celebrities known for their variety skills appeared, including Super Junior’s Eunhyuk, FTISLAND’s Lee Hong Ki, 2PM’s Chansung, INFINITE’s Sungjong, iKON’s Bobby, gugudan’s Kim Sejeong, and DIA’s Jung Chaeyeon.

The cast members spent some time outside introducing themselves. When it was Sungjong’s turn to introduce himself, Lee Soo Geun revealed, “Sungjong doesn’t do any outdoor activities.”

Upon hearing this, Jun Hyun Moo asked, “Why? Is that why you’re so pale?”

“No, it’s because I don’t have activities in general,” Sungjong joked, referring to INFINITE’s long hiatus.

Burnt down the studio with extreme opposite charm.

Sungjong kindly held an autograph session for the Sunday school kids at his church.

Recently, a photo of Sungjong holding a 'mini fan sign' event spread online. In the cut, Sungjong is captured autographing for children who are lined up behind a table.

It's explained the INFINITE member, who's known to be a dedicated Christian, took the time to greet his young fans and handed out autographs after church service.

Meanwhile, Hoya recently left the group and Woollim Entertainment. Sungjong and the other 5 remaining members of INFINITE are expected to make a comeback as a group of 6 in the near future.

The new SBS variety show “Master Key” has revealed the cast that will be taking part in their upcoming second episode!

Although the show has yet to premiere, SBS shared the lineup for its second episode on October 6 via social media when it announced that voting was beginning for its second round of players.

The newly released posters reveal that the October 21 episode of the show will include Lee Soo Geun, Jun Hyun Moo, Kim Jong Min, and Super Junior-M’s Henry from the first episode. It will also feature iKON’s Bobby, gugudan’s Kim Sejeong, MONSTA X’s Shownu, Super Junior’s Eunhyuk, INFINITE’s Sungjong, FTISLAND’s Lee Hong Ki, DIA’s Jung Chaeyeon, and 2PM’s Chansung.

Fans have been encouraged to vote via the “Master Key” website for the player that they’d like to support. The player chosen by the most viewers will receive a special benefit.

“Master Key” is a new SBS variety show with a unique format in which viewers become “Watchers” who take part in the creation of games.

Many fans are also looking forward to the show’s premiere episode on October 14, which will feature Lee Soo Geun, Jun Hyun Moo, Kim Jong Min, Henry, Wanna One’s Kang Daniel and Ong Sung Woo, Park Sung Kwang, EXO’s Baekhyun, Jo Bo Ah, B1A4’s Jinyoung, Kang Han Na, and ASTRO’s Cha Eun Woo. SBS has released a teaser video and stills of the cast in evening wear from the first episode!