Undertale (Peacetime)

Once upon a time, humans and monsters lived in peace and harmony. All was calm. Asgore, a young man, ruled over the monsters, and the king of humans ruled over the humans. But then the humans declared war on the monsters. Having won the battle, the humans imprisoned the monsters underground, Mount Abbott. Asgore then pondered how to save his people and his family. The humans sealed the monsters with a magical barrier, allowing anyone to enter the Underground but not leave. Then Queen Toriel gave birth to a son, Asriel.
A couple of years after the war, Chara climbed Mount Abbott as a child. She harbored hatred for humans and was unloved. She fell down Mount Abbott, where Asriel found her and took her home. It was peaceful, but Asgore, as ruler, was thirsty for revenge for the people. He began collecting the souls of the people who fell into the Underground. Toriel tried to reason with Asgore, but he was determined to free the people, so Toriel left him, relinquishing her title as queen and taking her children to the Ruins.
It hurt Asgore, but he did it. In the end, thanks to Undyne's guards and other monsters, he collected six human souls. Seven were needed to break the barrier.
Some time later, a child, Frisk, also fell into the Dungeon. She was saved by Toriel, Asriel, and Chara.
Having learned the story, she decided to save all the monsters.
Having passed the dangers of the Dungeon, she reached Asgore.
After her victory, she spared Asgore and, thanks to her Determination magic, she was able to break the barrier, releasing the monsters. The six souls that Asgore had collected were freed and disappeared into the forest, and it is unknown whether they found peace or not.
Humans didn't greet monsters kindly. But with Frisk's help, they were able to negotiate a peace treaty. Frisk became an ambassador between humans and monsters.
Monsters led by King Asgore built their town near Mount Abbott. They live in the forest. Part of the forest is their territory, patrolled by the royal guard, but humans are allowed to enter it, they're simply afraid.

Chara is an 18-year-old girl. She is the adopted daughter of Asgore and Toriel. She is Asriel's adoptive sister, but Asriel calls her his own.
She is skeptical, distrustful of people, grumpy, has a certain coldness towards them and is protective of her family. Attentive.
She wears a yellow and green sweater. She wears brown shorts and brown knee-high boots. She has a heart-shaped medallion around her neck. She lives with her family in a house. She was the one who fell into the dungeon first.
Her hair is cut in a bob. Her eyes are red.

Frisk is a 17-year-old girl. She is the one who freed the monsters from the dungeon. She serves as an ambassador for monsters and humans, helping maintain peace between the two races. She is also the adopted daughter of Asgore and Toriel and the adopted sister of Asriel.
She wears the same sweater as Chara, but it's blue and purple. Her pants are brown and her knee-length boots are brown. Her hair is also cut into a bob. Her eyes are golden.
She is kind, calm, honest, determined, compassionate and strong.

Undyne is an anthropomorphic fish-like monster with light blue scales and long red hair tied in a ponytail. He is the head of the Royal Guard.
She has red and blue fins on the sides of her head, red spots on her eyelids, two protruding sharp yellow teeth, black vertical pupils, yellow sclera, and a black eye patch over her left eye. She wears armor in combat, but removes her helmet during battles. At home or when simply out and about, she wears a black tank top, blue jeans, and red boots with yellow accents.
Personality: Hot-tempered, passionate, strong-willed, and confident. Quick to put ideas into action and unwavering in her convictions. Strives for justice, even in combat with an opponent. Values ​​pacifism thanks to her training with Asgore. Loves helping others and is a mentor to Papyrus. Dislikes puzzles and loves jokes. Collects weapons, primarily swords. Has romantic feelings for Alphys.
Alphys is the Royal Scientist. Alphys was given this position by Asgore.
A short, yellow, reptilian monster. Its posture is slightly hunched, giving the impression of nervousness. It has yellow scales, claws, and protruding teeth (their number may vary depending on which direction it faces). It has three toes on each foot, and three fingers and a thumb on each hand.
The "hair" is arranged in dots on the back of the head.
She usually wears round glasses and a white lab coat. On dates, she wears a polka-dot dress picked out for her by a friend.
Character: shy and introverted, often stutters while talking.
She has low self-esteem, makes self-deprecating comments, and sometimes underestimates her skills. She is intelligent, analytical, and observant. She is gifted in programming, robotics, and mechanical engineering. She enjoys anime, manga, and video games.
Enjoys publishing online content and writing game walkthroughs
Mettaton's creator. It was Alphys who designed the body for the robot Mettaton.

Mettaton is a robot with a soul, created by Alphys to entertain monsters on TV and at concerts.
Mettaton has a more human-like appearance: pale "skin," black hair that covers his right eye, a pink chest, a narrow waist, and wide shoulder pads. His knee-length boots are pink. His arms extend out to a great distance. The gloves on his hands are white. In front, where his chest is, he has a pink metal chest cage.
Character and personality: Charismatic, charming TV presenter. Selfish, prone to narcissism, often boasts about the beauty of his true form.
He's extremely attention-seeking and obsessed with ratings. He genuinely values ​​and cares for his fans, as well as Alphys and his cousin Napstablook. He's one of the few characters in the Underground who doesn't harbor any hatred or prejudice toward humanity. Mettaton openly states that he doesn't wish to harm people and is more interested in entertainment.
When the monsters get out, he hosts a separate show for the monsters.

Muffet is a vendor who sells spider baked goods.
Appearance and features: An anthropomorphic spider with periwinkle or lavender skin, five dark purple eyes, six arms, and two legs. She wears a maroon blouse with puff sleeves, slightly lighter pantaloons with buttons down the front, and a red ribbon across her chest. Her black hair is pulled back into two small ponytails.
Personality and Behavior: Greedy, stingy, intimidating, and somewhat hypocritical, but also polite and kind. Tends to talk about unhealthy or inappropriate things. Shows concern for her fellow spiders.
She now sells baked goods in her mini bakery.

Papyrus is one of the skeletons and Sans's brother.
A skeleton with a more vertical and geometric skull than his brother. Many of his facial expressions include a toothy grin. His eyes resemble vertical slits, and the pseudo-shaven parts of his skeleton form most of his facial expressions and the corners of his mouth. When he's emotional, his eyeballs are visible. He's taller and thinner than his brother. He currently wears a regular T-shirt and shorts after leaving the dungeon.
Character and personality: Selfish and narcissistic, he calls himself "The Great Papyrus." Energetic, self-confident, and charismatic. Hardworking, kind at heart. Despite his brash nature, he is forgiving. Optimistic and brave. Sometimes forgetful and inattentive, but can be cunning. Naive, but not stupid.
Undyne is Papyrus' friend and mentor.
Sans is Papyrus's brother. He works two jobs and loves and cares for his younger brother Papyrus.
Appearance: Sans is a short, broad-boned skeleton with mitten-like hands. He wears an unbuttoned blue jacket (or sweatshirt) with a gray hood and a white T-shirt underneath, black shorts with white stripes, and a pair of slippers. White pupils are visible in his black eye sockets, which disappear when Sans is serious or angry. When using telekinesis, an iris appears in Sans's left eye, flashing blue and yellow (the colors of patience and justice), while his right pupil disappears. He is always depicted with a wide, toothy grin on his face.
Personality: Sans is a laid-back individual. He enjoys sleeping, which he does during his work breaks. He's known for his jokes, which his brother, Papyrus, dislikes. He's kind and friendly. He believes in the good in others and believes that actions should be motivated by a desire to protect friends and help others, not revenge. He's observant and can tell a lot from just a facial expression.

Asgore Dreemurr is the King of the Monsters, Toriel's ex-husband, Asriel's father, and the adoptive father of the first human to fall into the Underground. The King rules over the monsters on the surface.
Asgore is a monster, the king of all monsters. He is large, with golden hair and a beard. He has long, spiraling horns on his head, and the fur that covers his body is all white except for his hair and beard. His eyes are golden. He wears armor, a long purple cloak with golden shoulder pads, a breastplate shaped like part of the Delta rune, signifying his royal status, and a small crown with a stone inside. Around his neck is a heart-shaped medallion.
Asgore is calm, kind, strong, and protective. He tries to be good-natured. He is also wise and fair. He can be decisive and cold when it comes to protecting his family and people from danger. By nature, he is a warrior and the king of the monsters, protecting his people.
Asgore's interests include gardening (his throne room is covered in flowers), making tea (such as golden flower tea), walking, and playing puns.
Toriel Dreemurr, the former Queen of the Monsters and ex-wife of King Asgore. They had a son, Asriel. After Asgore declared war on humanity, Toriel renounced the crown and remained in the Ruins.
Appearance: An anthropomorphic body with paws at the ends of its limbs. A head resembling a Nubian goat with drooping ears and short horns. Two fangs and long eyelashes, with a dark red iris. She wears a long purple robe with white sleeves and a Delta rune on her chest. She can sometimes be seen wearing reading glasses. A heart-shaped medallion hangs around her neck.
When they got to the surface, she refused to rule again with Asgore, but agreed for the sake of the people and Frisk's guardianship.
Personality and character: Kind, caring, and shows tough love. Smart, aspires to be a teacher. Loves puns and bad jokes. Can be strict and demanding when it comes to things she considers morally wrong.
Asriel is a monster who resembles both his parents, especially his mother, Toriel. He has white fur, long ears, a muzzle, and fangs.
He wears a long black robe with a white Delta rune. Black stripes run from his cheeks to his eyes. His eyes are burgundy. He is 18 years old.
All family members possess fire magic. There is a golden heart-shaped medallion around the neck.