Baby U!

"Baby U!" is a 2011 single by MBLAQ that was used as the fourth opening theme for the television anime Beelzebub (べるぜバブ). In the series, produced by Pierrot Plus, it appears as OP 4.

Released in Japan on October 26, 2011, "Baby U!" was MBLAQ's third Japanese single. The song reached No. 13 on the Oricon weekly singles chart and was later included on the group's Japanese studio album LOVE BEAT.