Male groups MBLAQ and BEAST show off their friendship. BEAST's leader Yoon Doo Joon updated his Twitter with the photo above,"It has been a while for MST (MBLAQ + BEAST) to pose together The members of MBLAQ and BEAST are seen in various cute poses. Although the boys debuted around the same time back in 2009,however they are showing each other a lot of love all this while.