유재석
One of the program's running gags is his stature, both verbally and physically. He is nicknamed "Daegari" (대가리), the vernacular word for "head", and "the Helmet" (헬멧), due to the extraordinary size (roughly 8 kg) of his head. Despite being the strongest member, which is displayed on some occasions, Jun-ha's timidness makes him an easy target for the other members, especially the ones who younger than him, to use his body for gags. Another nickname for him is "Mount Jun-ha" (준하산), since the member who stands behind him would probably be blocked and unable to hear what Yoo Jae-suk says. The other members thus considered the most-left position of the arrangement as the unluckiest one, since Jun-ha stood between that position and Yoo Jae-suk. Hyung-don joked that "his rights to sunlight were violated" by Jun-ha after staying in that position for about three years until Haha temporarily left the program to fulfill his military service and Jun Jin's addition to the team resulted in a change of arrangement in 2008.