Unkaind resembles a slender shaped lady with dark gray skin like the other Wicked Executives, silver gray hair parted to the right side of her face, covering it, leaving only her yellow-irised red-sclera left eye visible.She is the third tallest wicked yokai due to having a long horn and she is the most slender. She also has a single black horn pointing upwards on the top of her head. Unkaind shares the clothing color scheme of ther colleagues, hers being a dark purple kimono with milky pink snake patterns on her wide sleeves, and a similar pattern on her lower body, along with an inner layer of clothing of the same color, a dark purple ribbon circling her upper body and a fuscia choker. She sports the trademark Wicked flame in form of a hairpin on the right side of her head.
Her Japanese name, "Fukai" is a pun on "fukai" (Japanese: 不快,"unpleasant"), with the latter kanji being replaced by "kai" (Japanese: 怪,"mysterious" or "strange"), which is a part of all Wicked Executives and Wicked Servants' names in Japanese.
Her English name, "Unkaind" is taken from the English word "unkind" with "kai" added, presumably as a nod to her Japanese name, or in reference to the word "Yo-kai". Notably, it starts with "Un-", like all Wicked Executives' names in English.
Her Spanish name, "Malicia" is the spanish word for "Malice".
Her German name, "Miserika" combines "Misere" ("misery") and the name "Erika".