is the current head of the Alucard family, and a very powerful being. Rachel behaves like a stereotypical upper-class individual, often looking down upon others with boredom, arrogance, snobbery and apathy, and hates her vampire urges.
She is seemingly one of the most powerful characters in the series to the point where she can 'keep up' with Terumi. Rachel can create a dimension called the Requiem which intersects with her dream world. She is always with her servants Nago and Gii and usually with her butler, Valkenhayn R. Hellsing.
Both she and Valkenhayn
seem to be the only characters who know that time was looping the Calamity Trigger
a century before. She plays with the characters to push them forward to breaking the loop of time that is repeating itself. She has in her possession the Tsukuyomi Unit
, a powerful Sankishin which has, according to Rachel, an "absolute defense". The "absolute defense" takes the form of a golden shield which defends Kagutsuchi
from a laser fired by the Nox Nyctores
known as Gigant: Take-Mikazuchi