Noelle is a teenage, reindeer-like monster with short brown fur. The top of her head has two three-pronged, rounded velvet antlers, two deer ears on the side, and thick, long golden blonde hair. Her face has large eyes with eyelashes, freckles on her cheeks, a snout with a red nose and buck teeth. She has paws with furry fingers,a short raised brown tail with a white underside, and black hooves for feet. Her clothes consist of a red and green checkered V-neck sweater with black sleeves, which is over a white button-up shirt, and a black skirt. Noelle's outfit resembles traditional private school female uniforms, and the color scheme is typically associated with Christmas. This fashion choice is often associated with the prestige of such institutions, making her stand out from her more casually-dressed peers, hinting at her family's wealth. As Noelle has got hooves rather than feet, she cannot wear normal shoes. Noelle comes across as friendly and cheerful, and is often seen smiling and laughing. She is considerate, and her upbringing leads to her being humble and generous to her friends. Due to her family being rich, she fails to perceive how things are for those with less money. She is considered the smartest in her class. Noelle is usually very timid, easily flustered, unassertive, and struggles to voice her feelings, all as a result of her habit to suppress her true thoughts from others. She likes being scared because she associates it with being comforted. Her impeccable demeanor is partially a facade she constructed since her older sister's disappearance. She feels trapped, following the same routine all the time and has thought about what would happen if she was gone, but believes herself to be too weak to change and follow through, thus longing for a freedom she can't have. Like her family, she loves Christmas. She is part of the school's cross country team. She enjoys playing video games, her favorites being Dragon Blazers and Bloodcrushers. She likes finding glitches in games. She is familiar with meme culture. Noelle dislikes meat and animal products, but will tolerate meat. Noelle speaks in a proper manner, often ending sentences with a "fahaha" when saying something silly. Her speech mannerisms are very polite. She often uses minced oaths and colorful phrases such as "excheese me". Noelle also tends to get flustered and stutter, especially in the presence of someone she likes. At times, Noelle mumbles. Noelle grew up in Hometown with her mother and father, and was very close with her older sister, Dess. As a child, Noelle and her sister became friends with her neighbors Kris and Asriel. The four of them would often explore the forest around the graveyard together. At an unspecified point, she had also dressed up as the Angel for the Holiday Pageant. She has a fear of humans hiding under her bed. This was made worse (or caused) by Kris's repeated attempts to scare her when they were younger, including at least one time they hid under her bed. Noelle and her family would also spend time at the Dreemurr residence to watch the specials with the Dreemurrs. One day, however, an unspecified tragedy occurred, and it is implied that Dess either died or went missing. A short time after, Noelle attended a spelling bee, and refused to spell the word "December", causing Berdly to win. Noelle often accidentally forgets the key to her home. Thus, she would often stay at the Dreemurr residence. Kris would also often assist Noelle by helping her break into her own room.