Cassiopeia/Big East is the name of DBSK/TVXQ's fan club. They have been recognized as the largest fan club in the Guinness Book of World Records. The fan club was formed in 2006. The name is from the constellation, Cassiopeia, because it has five star when referring to DBSK, Cassie's often write it as DB5K, changing the 'S' to a '5' to represent that DBSK is a five member group. 'Their motto, Always Keep The Faith, also refers to DBSK becoming 5 again. it means to stay strong and have hope that the group will be one again. Many Cassie's say that the duo DBSK and JYJ are only sub- groups to DBSK.