Well, the letters that spell KAT-TUN represent each of the members' names.
The group was formed in 2001 by Kinki Kids member Domoto Koichi and they worked as his backup dancers before moving on to singing and performing on their own. For five years they performed during concerts and on TV, gaining many fans, yet strangely did not have an official debut. However, in February 2006 it was announced that the group would debut on March 22nd with their single
Real Face and album
Best of KAT-TUN.
Kamenashi Kazuya (b. 2/23/1986)
Unofficial Leader / Lead singer
Akanishi Jin (b. 7/4/1984)
Lead singer
Taguchi Junnosuke (b. 11/29/1985)
The Acrobatic Dynamite
Tanaka Koki (b. 11/5/1985)
Rapper
Ueda Tatsuya (b. 10/4/1983)
Ex-official Leader
Nakamaru Yuichi (b. 9/4/1983)
Human Beat Boxer
Scan Credit to : pontischa