Kaoruko is a fairly well-built young woman with a rather slim build; her skin is light blue in color. She has short, ruffled dark blue hair that curves upwards and downwards around her head, parted to her right, and wide yellow eyes with thick eyelashes. Her hero costume consists of a skintight dark blue crop top with a white high-collared section, a zipper down the middle, and over the higher part of her chest, which reveals her torso from the underside of her breasts. She wears black tights with loose white shorts, two yellow markings down either side of them, and thick white boots with lines running down their shafts and yellow rings in the center of them. Over her entire face, she wears a transparent visor with an air filter on each side, and on her hands, she wears plain dark blue gloves Kaoruko's Quirk allows her to produce bubbles filled with any aroma that she has smelled at least once before. She can make both sweet-smelling bubbles and foul-smelling ones Kaoruko is shown to be a fairly serious and dedicated hero. She appears to be able to stay calm, even when she was worried Sir Nighteye would fire her, which happens quite frequently

Sir Nighteye was a tall, lean, muscular man with sharp and elongated features. His shiny hair was always worn, smoothed down, and parted to his left, and was dark green, with three yellow streaks towards the front, two on his right and one on his left. His eyebrows were also yellowish, matching the rims of the triangular glasses he wore and the strikingly bright yellow irises of his stern-looking eyes. His looks gave off a sense of authority and power, as he rarely smiled and looked stern, and he always appeared to be glaring Unusually for a Pro Hero, Nighteye appeared to prefer plain office clothes; a plain white suit with gold buttons, a white dress shirt, and a red tie with white dots instead of an elaborate hero costume. Sir Nighteye maintained a stoic and intimidating presence with a cold and sharp glare, but that was only the side of his personality he showed in public. Even with his supposedly fierce stare, Nighteye greatly valued humor and required people to make him laugh before he acknowledged them. Nighteye believed that humor and energy were vital elements for the future of society and punished subordinates who failed to display those qualities. Nighteye is incredibly intelligent. Mirai's Quirk allowed him to see another person's future from a third person's point of view with touch. His quirk is activated by touch and eye contact combined, this lasts for an hour and has a recharge of 24 hours.