A notice was uploaded onto the show’s official Twitter account on March 5 saying, “Sixthman Maketh Mudo. Please suggest a sixth man, the new member of ‘Infinity Challenge.’ If you have a new face in mind, please suggest the sixth man with the tag #무도식스맨(#InfinityChallengeSixthMan) and we will listen to your suggestions for the show.”
In the revealed photo, “Infinity Challenge” members are sitting around a table together. The five members seem to be having a serious conversation.
You can also make a suggestion via Twitter with the tag #무도식스맨.