Dio - Distraught Overlord were a visual kei/metal band from Japan in 2006. Their sound was heavy and dark, yet melodious at the same time.
They were signed to Red List Entertainment, but DIO announced they were to cease activities on January 24, 2010. However, in their announcement, DIO members mentioned that they could return one day with a new name and style. Members:
Mikaru (vocals) → BLACK LINE
Kei (guitar)
Ivy (bass) → レミング → Moran
Denka (drums) → BLACK LINE (as Syu) Ex-members:
Erina (guitar) → VII-Sense

Read more about Dio - Distraught Overlord on Last.fm.