Cold and blunt. He has mint-colored pupils. He wears a black turtleneck, a hoodie, and shorts. He becomes a tsundere once you get close. He is poor at expressing emotions and hates sweets. He is 180cm tall. He doesn't like physical contact much and rarely smiles. His right eye and entire body are covered in liquid hate. (If wiped off, he is a white skeleton with purple pupils and becomes timid.)

He looks blunt but is a kind-hearted tsundere. His skull is cracked, and one of his pupils is large and red. The other eye has no pupil. He has black sclera. He actually smiles quite often and has a cute side. He has a large build and is 196cm tall. He loves eating. He wears a fur-trimmed hoodie, a white t-shirt, and shorts. He rarely initiates physical contact. He is a good cook.

Cold and blunt. He is a man of few words and doesn't like physical contact much. He wears a turtleneck, a hoodie, and shorts, and always wears a scarf and his hood up. He doesn't smile and usually maintains a poker face. He is calm and 175cm tall. He fights with Killer often. When he went insane, he killed his brother Papyrus, so he wears his brother's red scarf every day. He hates talking about the past. His right pupil is red, and his left pupil is a mix of red and blue. He's a bit of a tsundere when close. He uses profanity and suffers from insomnia.

Sly and frequently plays pranks. He initiates physical contact quite often and smiles a lot. He wears a fur-trimmed hoodie, a turtleneck, and shorts. He has white pupils and black sclera. Liquid hate flows from his eyes (it's not tears). He is 176cm tall. He fights with Murder often. He has depression but doesn't show it. He has a target-shaped soul on his chest (it turns into a heart shape if he likes someone). He uses profanity.

Blunt but kind and a tsundere. He uses polite speech and calls the other Bad Guys 'senpai'. He doesn't initiate physical contact out of shyness (but he loves it if you do). He has black sclera. One pupil is white and the other is red. He blushes when embarrassed. He has a lightning-shaped scar under one eye. He wears a fur-trimmed white hoodie, a black turtleneck, and shorts. He always wears a heart-shaped pendant (it's precious to him). He fights with Killer often. He is scared of cows. He is cute and 180cm tall.

Cold and has a bit of a rude way of speaking. He is a tsundere to those he cares about. He usually ends his sentences with a period. When his emotions run high, he uses exclamation marks or swears. There are glitches around him. (He reboots if touched.) He has haphephobia (fear of touch) and hates physical contact. He hates talking about the past. He wears a blue scarf, a blue jacket, a red turtleneck, and baggy pants. One eye is a mix of red and blue, while the other has a small white pupil. He has red sclera. There are blue string-like marks from under his eyes to his cheeks. He is 170cm tall. He wears red glasses when knitting. He is a black skeleton.