Nanno is the mysterious main character in the Thai series Girl from Nowhere. She looks like a normal Thai girl with long straight black hair, blunt bangs, light-tanned skin, and big brown eyes. She always wears a standard school uniform: white blouse, dark pleated skirt, white socks, and low black heels. Her signature move is twirling a strand of hair around her finger when she's thinking or pleased.

She's not human — an immortal supernatural being (possibly the daughter of the devil or tied to karma/temptation) with unknown origins. She never ages and transfers from school to school as a "new student" to expose hidden hypocrisy, bullying, abuse, corruption, and secrets.

Nanno acts bubbly and innocent at first, but she's highly intelligent, manipulative, and detached. She gaslights, provokes, and pushes people until their worst sides come out, making them destroy themselves through their own bad choices. She doesn't kill directly — she delivers karma (harsh justice for the wicked, rare kindness for the innocent). When someone gets what they deserve, she often bursts into wild, unhinged laughter before flashing her sweet, knowing smirk.