[Edit][Edit]
Grell is a Shinigami who initially poses as Angelina Durless's(madam red) butler and conspires with her as Jack the Ripper. He is part of the Dispatch Management Division and collecting souls is one of his main priorities.
Grell initially appears as a meek, slender man with long brown hair tied back with a red ribbon, along with neon green eyes and large round glasses. He dresses in simple, mostly brown clothes.
However, in his Shinigami form, Grell has long, red hair, shark-like teeth, and red-framed glasses which are accessorized with a neck chain adorned with skulls. He also wears a suit that includes gloves and a tie, high-heeled ankle boots, and a red coat he took from Angelina's corpse, which he slings off his shoulders and wears around his elbows.
Grell, as Angelina Durless's butler, is shy, awkward and fairly ineffective at his job, ruining even simple things like preparing tea and getting lost when driving a carriage. Furthermore, whenever he messes something up, he has a tendency to overreact and attempts to commit suicide in a fit of melodramatic humiliation.
As a Shinigami, however, Grell is over-the-top and flamboyant, with a tendency to use female nouns and pronouns when referring to himself. He often puts things in terms of theater, referring to Angelina's death as the falling of curtains on a theater act, and comparing his relationship with Sebastian to the famous play, Romeo and Juliet.
Grell is typically bloodthirsty and will do anything for the desired results. When Undertaker causes a cut on his face, he claims he could never forgive someone for hurting his face.