Harper appears to be an average sized Troll with bright turquoise skin. Many different colored paint splotches cover her body, such as the colors yellow, pink, and dark blue paint. The paint splotches also cover up her long, ultramarine hair. Harper's eyes both appear to be different colors. Her right eye is pink, while her left eye is green. She wears a cream dress, that has a small, round light brown button on it. In the pocket of the dress there seems to be pink and yellow crayons or paint brushes.
- Although not confirmed, it is likely that Harper's occupation is being an artist or her hobby could be painting.
- Harper is an unlockable character in Trolls:Crazy Forest Party. Her special talent is painting.
- The toy versions of Harper come with the following description: "Harper lets her true colors shine by painting with her hair!"
|Aspen Heitz • Biggie • Branch • Cookie Sugarloaf • Cooper • Creek • DJ Suki • Fuzzbert • Grandma Rosiepuff • Guy Diamond • Harper • King Peppy • Mandy Sparkledust • Moxie Dewdrop • Princess Poppy • Satin and Chenille • Smidge • Troll Child (One) • Troll Child (Two) • Troll Child (Three) • Troll Child (Four) • Troll Child (Five) • Troll Child (Six)|
|Bibbly • Bridget • Chef • Chad • King Gristle Sr. • Prince Gristle • Todd|