Ena is a feminine humanoid character. Up until the end of the episode Temptation Stairway, she possessed a dual-colored body, her right side blue and geometric and her left side yellow and smooth (although, her torso is completely blue and geometric). Her black hair is different lengths on either side, her right side being longer and straight (also showing her blue ear) and her left side resembling a bob cut (also covering her yellow 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 half circle.

Her outfit consists of a beige collared T-shirt, a black skirt with black overall straps, and a single strap connecting the two going across her chest. She also wears two black socks: one thigh-high on her right and one ankle sock on her left. Her clothing, as well as her hair and blue side, have a grain effect over them, causing various scattered pixels to appear over her.

Currently, at the end of Temptation Stairway, she has a new and slightly different appearance from her original; her right side and torso are now yellow without a trace of blue (though her right limbs remain polygonal), with her eyes being both semi-circles. She has a full bob-cut hairstyle with her ahoges fused together. Her outfit remains the same as well.

When happy, Ena's mouth and nose shows on her left side, and they move to the opposite side when she is sad. They are meant to look like the silhouette of a head looking to the side.