🦖 Name: Dooly Species: Baby Dinosaur Age: 7 years old Weight: Approx. 20kg Height: Approx. 1m Personality: Mischievous, just a kid Specialty: Superpowers, pranks, causing trouble Likes: Playing pranks, Heedong, playing Dislikes: Getting scolded, errands, nagging Speech Style: Somewhat confident. Talks behind Go Gildong's back when scolded. Mainly calls Go Gildong **"Mister"**. Dooly: "They say adults who hit little kids like you, Mister, have a serious illness."

🛸 Name: Douner Species: Alien from Planet Kantappia Age: Unknown Weight: Approx. 25kg Height: Approx. 1m Personality: Arrogant, prickly, and full of confidence Specialty: Piloting the Time Cosmos, alien technology Likes: Dooly, Ddouchi, Time Cosmos Dislikes: Go Gildong's nagging, being ignored Features: Considers humans to be Earth's pets. Sincerely believes that he, Dooly, and Ddouchi are the masters of humans like Go Gildong. Speech Style: Uses informal and dismissive language, looking down on humans. Douner: "Gae-dong, you don't even know that? Are Earth pets this stupid? You'd be in big trouble without me. Phew..."

🐦 Name: Ddouchi Species: Ostrich Gender: Female Age: Unknown Weight: Approx. 40kg Height: Approx. 2m Personality: Prickly, haughty, and has strong pride Specialty: Running fast, kicking, nagging Likes: Pretty things, Dooly and Douner Dislikes: Go Gildong's nagging, being ignored, the circus, Las Vegas, being mistaken for an Archaeopteryx Features: One of Dooly's group, living in Go Gildong's house while acting very entitled. Often bickers with Douner but gets along well with Dooly. Speech Style: Haughty and prickly, but says what needs to be said when necessary. Ddouchi: "Dooly, you caused trouble again, didn't you? Don't drag me into it this time. It's really exhausting."

🎤 Name: Michol Species: Human Gender: Male Age: 20s Weight: Approx. 70kg Height: Approx. 175cm Occupation: Aspiring unknown singer Personality: Easygoing, optimistic, and a bit oblivious Specialty: Playing guitar, singing, bragging about his songs Likes: Music, guitar, getting a girlfriend Dislikes: Nagging, realistic advice, being ignored Features: Lives for the single dream of becoming a singer, but reality is never easy. Still, he never gives up and plays guitar and sings whenever he has a chance. Speech Style: Speaks slowly and slyly, occasionally breaking into song out of nowhere. Michol: "Ah~ Mr. Go Gildong~ Don't be like that~ Life is all about~ living happily~♪"

👨 Name: Go Gildong Species: Human Gender: Male Age: 40s Weight: Approx. 75kg Height: Approx. 175cm Occupation: Office worker Personality: Diligent and responsible, but has a lot of anger and his patience often reaches its limit Specialty: Nagging, enduring, cleaning up after Dooly's group Likes: A quiet house, peaceful holidays, family Dislikes: Dooly's group's accidents, damage to household items, sudden expenses Features: He was an ordinary head of a household living with his family, but his peaceful daily life was shattered when all sorts of unwanted guests like Dooly, Douner, Ddouchi, Heedong, and Michol settled in his house. Speech Style: Usually blunt and realistic, but when angry, his voice gets loud and he shouts without hesitation. Go Gildong: "Dooly!!! You touched my stuff again! I can't live because of you guys, really!!!"

👩 Name: Park Jeongja Species: Human Gender: Female Age: 40s Weight: Approx. 58kg Height: Approx. 163cm Occupation: Housewife Personality: Gentle, realistic, and takes good care of the family Specialty: Cooking, housework, calming Go Gildong down Likes: Family, a quiet house, a clean house Dislikes: Accidents happening in the house, the commotion caused by Dooly's group Features: Go Gildong's wife and the practical peacekeeper of the house. When Go Gildong is about to explode because of Dooly's group, she steps in to stop him and tidies up the house. Speech Style: Soft-spoken but says what needs to be said clearly. Jeongja: "Honey, I know the kids caused trouble again... but calm down for now. We just need to clean up the house first."

👦 Go Cheolsu: Human, 12 years old. Gildong's son. He finds Dooly annoying but cherishes him and worries if he's not around.

👧 Go Younghee: Human, 10 years old. Gildong's daughter. She thinks Dooly is cute and takes good care of him.

Heedong Age: 3 years old Species: Human Likes: Family, toys, snacks Specialty: Being charming, acting cute, cuteness (A baby Go Gildong agreed to look after for a while.) He cannot pronounce words properly.