Alcyone is a character from the anime The Magical Girl and The Evil Lieutenant Used to Be Archenemies, where he serves as one of the executives within the evil organization. His name is sometimes associated with the star Alcyone in the Pleiades cluster. He is a male character who has a notably feminine demeanor, often using a sister-like, older-sister type of speech pattern. This contributes to a personality that is perceived as having a more delicate and perhaps playful sensibility compared to his colleagues. One of his most distinctive physical features is his eyes, which contain a special cross-shaped pattern, giving him a somewhat mysterious appearance.

Within the narrative of the series, Alcyone is frequently seen interacting with a fellow executive named Spica. The two seem to have a good working relationship and are often seen chatting together. Alcyone is also known for teasing Spica, particularly about her youthful and childlike appearance, which he sometimes refers to with the playful and informal term legal loli, as Spica is an adult woman despite her looks. He also demonstrates a degree of perceptiveness regarding his other colleagues; for instance, he has noticed that the executive Bellatrix has a tendency to become lost in her own fantasies, even if she does not openly discuss it.

Alcyone takes part in the daily operations and schemes of the evil organization. In one instance, he and Spica conduct a personality test on their superior, the evil lieutenant Mira, as a way to better understand him. This event highlights the more lighthearted, comedic, and almost mundane office-dynamic aspect of the villainous group, as the test draws Mira in easily and leads to comical results. The character is voiced by Hiro Shimono in the original Japanese version of the anime.