Constellation:

Character:

Shown in the very first part of the OVA doing battle with Black Rock Shooter. She has red eyes and long black hair. Similar to Black Rock Shooter, she has been depicted as having a red flame that burns from her right eye. She has two dark red horns and also has gauntlets similar to Dead Master's. Her outfit is similar to Black Rock Shooter's except for the design of her jacket and her bikini top; her jacket extends into a worn-out cape which is dyed red at the end. Her primary weapon is her "King Saw," a very large curved sword with a saw like back edge. She defeats Black Rock Shooter and gives her her distinctive scar under her left breast. It is unknown at this time who her human counterpart is or where she came from. It is speculated that she and Black Rock Shooter can merge to become Insane Black Rock Shooter.

Source from Wikipeida