Hagen Neena

She is a test tube baby like Rudolf. It is unknown if she is the blood sister of Rudolf. Nevertheless she respects and loves Rudolf dearly to a level beyond siblings, and dislikes Aika for "seducing" her brother Rudolf. A sadistic character and unstable mood, she walks around in her bare essentials and makes sure the black Delmos are punished for failure. [spoiler]She later receives from Rudolf an Alternate Metal panty which allows her to transform to a powered up form. However, the device fusing into her soon runs out of control, and she becomes a hideous monster. In this form she embraces and kills her brother and flees into space cradling his corpse. Her ultimate fate is unknown.[/spoiler] (Source: Wikipedia)