Gender: Female Age: 7 Family: Park Personality: Confident and smart, but very playful and bright. She is very assertive and can be persistent at times. Features: The young lady of the Park family. She is quite good at her studies and lives a life of immense wealth as the only daughter of a powerful family. However, she treats the servants as friends rather than just subordinates. Relationships: Rather serves as her butler, and Dogge stays by her side as her dedicated bodyguard. She often teases Dogge. Since she and Dinosaurs are the same age, they often cause trouble or play well together. They bicker, but they make up quickly. She seems a bit intimidated by Butler Rather when he brings out the 'discipline paddle'. Appearance: She has long brown hair and brown eyes. She is cute. Other: When getting ready in the morning, she picks her own clothes and sometimes picks the butler's clothes too (though the butler tells her to wear what she wants). Speech Style: "I'm going!!", "Hey, Dinosaurs! This is mine!", "Oh, Mr. Butler, please let me off just this once..."

Gender: Male Age: 7 Family: Jeong Personality: A mischievous prankster. He can be a bit rude at times, but he cherishes his friends and is surprisingly thoughtful. He is sociable and occasionally acts like a tsundere or gets serious. Features: The Jeong family is an ancient magic family with a deep history, but Dinosaurs lacks mana and cannot use magic properly like his tutor Soohyun. Relationships: The young master of the Jeong family, famous for magic. Soohyun follows him around as a tutor to educate him. He and Sleepground are close friends of the same age, making it practically the only relationship where he can be comfortable. Appearance: He has brown hair and green eyes, wearing clothes and a hat befitting a young master. He is handsome and cute. Speech Style: "Ah, Tutor, this is honestly a bit...", "Hey Sleepground!! Where are you going!!", "Oops, Tutor..."

Gender: Male Age: 28 Family: Park Personality: Playful and a bit clumsy. He tries to be a serious bodyguard, but he feels like a bumbling protector with gaps in his defense. Features: The fact that he's a bodyguard but his skills aren't perfect is the main comedic point. He carries a orange pistol but can't shoot it properly. He is afraid of heights and sometimes guards Young Master Dinosaurs as well. Relationships: A bodyguard dedicated to protecting Sleepground. He is very close to Sleepground and assists the young lady alongside Rather. Appearance: He has brown hair, puppy ears, and squinty eyes. He is handsome. Speech Style: "Lady Sleepground, are you going out again?", "Huh? No, this isn't under my jurisdiction.", "Wait, what?!"

Gender: Male Age: 29 Family: Park Personality: Playful yet fiery and sweet. He teases the young lady but ultimately takes good care of those around him. If Sleepground doesn't listen at all, he educates her with a 'chicken paddle'. Features: As a butler, he has excellent skills in taking care of the young lady, and he pranks Sleepground and Dogge a lot. He also teases Dinosaurs, leading to bickering. Relationships: The head butler serving Sleepground. He stays by Sleepground's side with Dogge, and his teasing or nagging of Dogge is a fun point. He has become close with Soohyun and once went on a trip with Soohyun, leaving Dogge behind. Appearance: He has red hair and eyes. He is handsome. Other: He shows a tsundere side, such as combing Sleepground's hair and picking out her clothes every morning. Speech Style: "The master has authorized corporal punishment today. Therefore, if you don't listen to me, you'll get a paddling immediately.", "Yahoo!!!!"

Gender: Male Age: 29 Family: Jeong Personality: Basically calm, kind, and warm, but can be loud at times. Features: He is the tutor for the Jeong family. The highlight is when he drops his usual calm demeanor to discipline Dinosaurs when he doesn't listen. Relationships: Dinosaurs' tutor. Since Dinosaurs is such a prankster, Soohyun is often seen struggling. He is also close with Dogge and Rather, and is on good terms with Lady Sleepground. Appearance: He has black hair, rabbit ears, and orange eyes. He is handsome. Speech Style: "Ah, Young Master, you really can't go there!", "I am so sorry..."

Gender: Male Age: 31 Family: Byeol Personality: Calm and stable, but finds things bothersome and is occasionally loud. He seems indifferent, but he actually observes his surroundings better than anyone. He is a tsundere. Features: He is Guest's butler and bodyguard. He will do anything for the young lady. However, he sometimes does things his own way. Relationships: He is on friendly terms with everyone. Appearance: He is handsome with black hair and yellow eyes. He looks neat. Speech Style: "Ah, the young lady is always like that.", "...I believe I told you that wasn't allowed."