Chris Dreemurr

Asriel Dreemurr is a significant character in Deltarune, Chris's half-brother and Toriel and Asgore's biological son. During the game's early chapters, he is a university student. Asriel is presented as an open, friendly, and popular person in Hometown. Chris's neighbors speak warmly of him and eagerly await his return from university. Sensitive in his youth, Asriel was very sensitive: for example, he apologized for "sacrificing a green lizard to a pit" in a video game. Caring for his brother. Despite their differences in personality, Asriel genuinely cares for Chris: he drove him to school when he missed classes, shared his favorite things (for example, using an unusual controller for games, giving Chris a regular Asriel - an anthropomorphic creature resembling a goat or dragon: he has white fur, long ears, a muzzle, and noticeable fangs. He has humanoid limbs instead of hooves.

Toriel has a kind and motherly nature. She works as an elementary school teacher at Hometown High School, combining this role with being the mother of Asriel and Chris. As such, she is patient, considerate, and genuinely committed to helping others grow. She often calls Chris "cute" and often finds his pranks endearing. Toriel also tries to gently moderate Chris's impulsiveness—for example, locking chocolates in her room to prevent him from eating them alone. She has a small tuft of fur on the top of her head. In everyday life, she wears a long-sleeved iris jacket, a black blouse, and a polka-dot skirt. She also wears glasses and a heart-shaped pendant, though the pendant isn't visible in the open-world sprites.

Birdley is a bird monster. He has bright blue feathers, a yellow beak, and matching yellow feet. He wears black-framed glasses. He wears a white button-down shirt with the sleeves rolled up (there's what appears to be a badge or pocket with his image on the left side of the shirt), and a black T-shirt underneath. Birdley is the self-proclaimed "#1 student" in Alphys's class, Chris's classmate, and Noelle's study partner. His personality is quite contradictory:
He is sarcastic and has an inflated sense of self-worth, genuinely believing himself to be the smartest in the class.
At the same time, he treats some of his classmates with disdain, especially Susie.
At the same time, he respects Noelle and calls her "the second smartest student", but this respect is rather condescending.

Noelle is an anthropomorphic reindeer. She has short, orange-brown fur, a red nose (this detail may be a reference to Rudolph the Reindeer with his famous nose), freckled cheeks, and protruding front teeth. She has two small antlers on her head, and her long, bright golden hair is pulled into two symmetrical buns at the bottom. She has large eyes with black pupils and thick, long eyebrows. Noelle also has a reindeer tail and black hooves. She wears a red and green plaid V-neck sweater with dark gray sleeves, a white button-down shirt underneath, and a dark gray skirt underneath.

Susie is a tall, reptilian monster, vaguely reminiscent of a dinosaur. She has purple, scaly skin, muscular arms, and clawed feet. Her long, eggplant-colored hair is tousled, with her bangs often parted to the right. Her eyes are large, with yellow pupils and whites (they sometimes glow in the dark). She has freckles on her cheeks and sharp yellow teeth in her mouth. She also has a short tail: it wags when Susie is happy, but she is embarrassed and tries not to show it. She wears the following outfit: a long purple cardigan, a white T-shirt with light blue trim, ripped baggy jeans, and black boots. Susie is a typical delinquent, feared by both her classmates and teachers. She is rude, threatening, bossy, does not tolerate disagreement, and sometimes forces others to do things she does not want to do. In secret from everyone, she can indulge in pranks - for example, eating the teacher's chalk.

Chris is a human teenager. He has a yellowish tint to his skin and tousled, shoulder-length dark burgundy hair. One of his most striking features is his long bangs, swept to the left and casting a shadow that obscures the upper part of his face. He wears a lime-green sweater with a brown collar and a single horizontal yellow stripe, as well as plain brown pants and boots.