Gremmy is a minor antagonist from the series Bleach. He is a Quincy and a Sternritter in the Wandenreich army led by Yhwach and given a Schrift, V the "Visionary". Despite his current body not being his own but a manifestation from his given schrift, his past is unclear given his true form is that of a brain in a casing which in fact is a piece of the Soul King.

Gremmy has a young appearance with messy blond hair, youthful features, and yellow eyes. His attire is a variation of the Sternritter's typical white uniform, consisting of a loose trench coat featuring a hood and a high collar.

As a Quincy he possesses the skills as one but he heavily relies on his schrift that allows anything he imagines to become reality, anything such as conjuring a literal meteor, a duplicate of himself or manifesting brand new life altogether, or even materializing a literal vacuum of space itself. They are just small examples as there seem to be no limits whatsoever, the downside being that his imagination only carries over onto things his train of thought focuses on. Or in the case with a battle of his where he imagined himself so strong that his body wasn't capable of withstanding it.