What is "a.b.c-z"

is a five-member Japanese boy band under Johnny & Associates. The group's former name was A.B.C., which stands for Acrobat Boys Club. It was changed to A.B.C-Z after Ryosuke Hashimoto was moved to the group from J.J.Express in 2008.

The group was a former Johnny's Jr. unit. They debuted last February 2, 2012 with their DVD Za ABC ~5 Stars~.