Height 175 cm (5'9") Grell is Madam Red's somewhat ineffectual butler. Mostly, she tends to hang around the edges of the scene, fretting over the socially unacceptable things that her mistress continually gets up to. When something is not up to Madam Red's exacting standards, she takes it out on Grell whether or not it's actually her fault. Her tea is said to be far inferior to Sebastian's. Meek, easily scandalized, and highly nervous, Grell's personality is entirely at odds with her mistress's. As a result, the other characters tend to either ignore or walk all over her.

Spoiler

This mild personality is entirely a facade. Grell's true identity is that of a death god; one with a true personality just as flamboyant as Madam Red's, perhaps even more so. The real Grell is a cheerful sadist who enjoys flirting and bloody murder, sometimes at the same time. She meets Madam Red during a night where she murders one of her patients and is attracted to her--both because her favorite color is red and because of her issues regarding childbirth. (Grell confesses to her that she, too, wishes that she could bear a child. But is unable to, being biologically male.) Grell refers to herself with feminine pronouns and has more than a passing interest in Sebastian; at one point she compares the two of them to Romeo and Juliet during their battle (leaving Sebastian horrified). Though having an interest in Sebastian, it was stated that Grell's 'true love' is William. Overall, she appears to have a tenuous grasp on sanity at best, switching from childish irritation to murderous rage at the drop of a hat. Like a typical death god, Grell possesses a scythe; however, she had it transformed into a chainsaw because she considered a regular scythe to be old-fashioned. Grell explains that her scythe is capable of cutting through anything; when it cuts through a person, it divides their soul and their memories, thus resulting in that person's memories playing before their eyes.