★Ena's World★

Merci is a mime-themed humanoid. She wears a black and white striped shirt with long dark gray sleeves, pants, black boots, and a beret. She also wears a mask with three red dots and a smiling face with a red mouth, which can resemble a smile or lips. On her hands are two white puppets with wedge-shaped eyes, which can change to an angry expression, and diamond-shaped mouths, which are shown on one occasion with triangular teeth when angry. She also carries a long dark red staff over her shoulders.

Merci has a rather aggressive personality. She appears to swear frequently in Korean (her native language) and has been shown stomping her feet when she appears frustrated. However, there may also be a charming side to her, as she seemed pleasantly surprised when she reunited with Ena in the Labyrinth. Her aggressive tone when advising Ena to run away may be her way of showing concern for her.

Moony initially takes on the appearance of a cartoon moon. Her physical form is that of a floating, light gray sphere, with the right side of her face white, resembling a crescent moon. She has a single squinting eye on the left side of her head, as well as black hair that falls into a triangular point behind her face, and a rectangular eyebrow. She also has a rather large, cubical hole on the left side of her body, from which various different objects can be seen emerging, and which constantly changes in each episode of the series (in this case, the hole closes to trap the item).

In the first episode, Auction Day, Moony's head hole has a gray rectangular block sticking out of it. In Extinction Party, her face now has a rectangular hole. In Temptation Stairway, she is seen in three different states throughout the episode. At first, she wears a starchy-white arm, supposedly from one of the mannequin-like people that populate the environment around her, until she is trampled by the passing mannequins, leaving her with a hole.

Moony often appears to be a dramatic, comical, somewhat conceited, and overall very opinionated individual. She has a tendency to frequently become irritated or annoyed in certain situations, with her disdain usually directed at Ena. She also appears to be somewhat judgmental when referring to other groups of people, having previously called large gatherings of people "ugly" on one occasion and "idiots" on another.

Ana ENA does not have a fixed personality, however, the yellow side of Ena appears to have a masculine voice, even though ENA is mentioned several times as a Woman, but it is true that ENA is a woman, she is a woman, but anyway, the yellow side of Ena also appears to be optimistic, happy and always have solutions for everything.

The blue side of An ENA appears to be a bit pessimistic, sad and depressed, always down and with an uncomfortable and downcast expression.

When Ena's two emotions become too extreme, half of Ena's face turns white and the other half turns black. Her mouth and nose move to the white side when this occurs, though there are brief moments in Auction Day where they are on the black side. Her sclera turns black, and the color of her irises changes to match the color of the emotion she is feeling. When she is at her happiest, or "drunk", her white side is on the left side with a yellow iris, and she appears unsteady as she often slurs her speech. When she is at her saddest, her white side is on the right side with a blue iris. She is also seen losing her arms and spinning around during a tantrum she had while in her saddest form. Some of her more extreme movements while in her saddest form leave behind a faint afterimage of herself.

An Ena is a female humanoid character with a two-colored body, her right side being blue and geometric and her left side being yellow and plain (though her torso is completely blue and geometric). Her hands are also different in appearance on both sides, with her yellow hand having a four-fingered human hand and her blue hand being geometric with blocky fingers. Her black hair is a different length on each side, her right side being longer and straight (also showing her ear) and her left side resembling a bob cut (also covering her ear) with two triangular ahoges. She also has blunt-cut bangs. Her eyes are unique in shape, one being a diamond with a black triangle under it (resembling an eyelash) and the other a semicircle.

Her outfit consists of a beige collared t-shirt, a black skirt with black straps, and a single strap connecting the two, going across her chest. She also wears two black socks: a thigh-high one on the right and an ankle-high one on the left. Her clothes, as well as her hair and blue side, have a grainy effect, causing several scattered pixels to appear on her.

When she is happy, Ena's mouth and nose appear on the left side, and move to the opposite side when she is sad. The intention is to make them look like the silhouette of a head looking to the side.