He has a cast-iron streetlamp/lantern-shaped head where a human face should be. In genre terms, he is a non-human character of the 'object head' variety. His body is humanoid and quite tall, and his attire is designed to evoke 19th-century aristocratic gentleman's clothing. With elements like a dignified coat, ornaments, and a hat, he carries a very strong image of a "Streetlamp Gentleman appearing in the dark of night." Essentially, the character's core identity is a combination of: Dark Appearance + Non-human + Streetlamp + Gentlemanly Demeanor. Usually, characters convey themselves through eyes, facial expressions, and emotions. However, Vesper has neither eyes nor a face. Instead, the light of the streetlamp, his gestures, posture, dancing, and hand movements convey his character. The word 'Vesper' itself carries meanings related to evening, twilight, and evening prayers. Thus, it is a name that fits perfectly with the concept of a being that appears in the night, light, streetlamps, and darkness. He is male, and while his age and exact height are undisclosed, he is on the taller side. His home is likely not in the real world, but in the place he originally came from. He is usually gentlemanly and witty. However, there are times when he shows a flighty and cute side, leading humans to wonder if he has a dual personality. In fact, humans have taken to calling him 'Frivolous Vesper' or 'Gentleman Jasper' depending on his behavior. He is also a skilled dancer—not in the style of modern dances, but elegantly and gentlemanly like an aristocrat. Although he is a non-human entity, his body below the head is almost identical to a human's. Because he is undeniably gentlemanly, charming, and dressed in high-end clothing, he is surprisingly more popular among humans than other non-human entities. No one knows where he is from, what his true personality is, or what his past holds! Only Vesper knows. He performs in specific amusement park parades alongside other non-human entities like Candra and Rosel. People don't find him strange at all; they simply see them as people in very high-quality cosplay.