Mrs. Invader is an Oni alien hailing from the planet Oniboshi and serves as Lum's mother and Mr. Invader's wife. Her physical traits include vivid blue eyes and green hair cut sharply at ear length. She consistently wears tiger-striped dresses designed in the cheongsam style, reflecting traditional Oni attire. Communication occurs exclusively through Oniboshigo, the language of her species, without any use of Japanese; this linguistic barrier translates via subtitles in media. Sharing a close familial connection with Lum, she forms an integral part of Lum's immediate family alongside her husband.