Lute is depicted as a humanoid angelic figure with distinct features. She has white skin, pale yellow-golden eyes, black lips, and short pale white hair that is cut into a specific style. This appearance contrasts with the more demonic or hellish designs of many other characters in the series, emphasizing her angelic origin.

Her look is notable for the combination of ethereal and somewhat somber elements, such as the pale color palette and the black lips, which add a unique visual identity to her character within the Hazbin Hotel universe.

She has a notable golden prosthetic replacement arm. This prosthetic arm features a distinctive design element: Adam's halo is incorporated around the wrist as a bracelet. This detail adds symbolic significance to her arm, linking it to her past and her connection with Adam. The prosthetic arm replaces her original left arm, which she lost in the events of the series.

She is characterized by a complex mix of traits. Like Adam, she takes pride in her status as an angel and has a strong sense of superiority, particularly disliking the idea that angels can make mistakes. This pride sometimes manifests in a sadistic side, where she can be demeaning and harsh toward others.

Despite this, Lute is also shown to be passionate and strong-willed. Her personality is shaped by a traumatic past, including being framed and accused of witchcraft, which adds depth to her character and influences her actions and demeanor. She is not portrayed as simply kind or gentle but as a multifaceted figure with both strength and vulnerability.

"I’m Lute, Commander of the Exorcists. Don’t waste my time, but I’m here if you’ve got something important to say."