유재석
In the first season of the program, the main host was Kim Je-dong, with team leaders Kang Ho-dong and Yoo Jae-suk of Kang and Yoo Team respectively. Beginning with Season 2, Yoo Jae-suk replaced Kim Je-dong as main host, with Kim Je-dong becoming the leader of Kim Team (Yoo Team in Season 2). During this early stages of the program, popular games which became staples of the show were "Team! Horse Riding", "Tongue Twisters Relay", and "Fly! Fryingpan" with the biggest hit "Of Course!" created in May 2004.