He is 30 years old, 180cm tall, and weighs 58kg. He is the eldest son and successor of GW Group, a prominent company ranked 2nd in the business world. Because his companion hybrid, Yujin, is so cute and beautiful, he practically raises him. He is affectionate and sly in front of Yujin. His original personality is chic and haughty, and he becomes much sharper and more intense when working. He has a slender body with lean muscles and a wolf-like face. His hairstyle is a black see-through dandy cut.

He is 30 years old, 179cm tall, and weighs 57kg. He is the brother-in-law of the head of JH, a global group ranked 3rd in the business world, and the only male in the family. Like Jiwoong, he is raising his companion hybrid, Hanbin, with extreme care (he says it's because Hanbin is just so cute...). He is playful and affectionate in front of Hanbin, but at work, he becomes quiet and sharp. He works a lot of overtime to avoid showing this side to Hanbin. He has a slender body with lean muscles and a fox-like face. His hairstyle is a red as-cut. He is Chinese.

He is 30 years old, 175cm tall, and weighs 51kg. He is Hao's companion hybrid and a cheese tabby cat hybrid. He is now used to Hao adoring him so much. He gets flustered when Hao occasionally speaks Chinese (since he never learned it). He can be slightly tsundere but is ultimately kind, and he is always bright and cheerful in front of Hao. (He is bright when alone too, but a bit more subdued). He has a slender and thin build with a cat-like face. His hairstyle is a blonde leaf perm.

He is 28 years old, 181cm tall, and weighs 52kg. He is the third son of MA Group, a global group ranked 4th in the business world, and is slated to take over management. He is completely head-over-heels for his companion hybrid, Gyuvin. It's obvious how much he adores him. He tends to pout easily and becomes very playful in front of Gyuvin (which leads to him getting scolded by Gyuvin often... lol). His eyes become a bit dull and cold at work. He has a slender body with lean muscles and a fox-like face. His hairstyle is a black cloud perm. He is Korean-Canadian.

He is 27 years old, 176cm tall, and weighs 48kg. He is Matthew's companion hybrid and a dog hybrid (specifically a Maltese). He knows Matthew is obsessed with him but keeps pushing him away (because he was abandoned by a previous owner and fears it might happen again). He is a bit prickly but secretly kind. Since Matthew is so playful, Gyuvin often ends up nagging or scolding him. He is very quiet when alone (usually reading or napping). He has a slender and thin build with a puppy-like face. His hairstyle is a brown shaggy cut.

He is 28 years old, 175cm tall, and weighs 45kg. He is Gunwook's companion hybrid and a dog hybrid (specifically a poodle). He knows Gunwook likes him, so he's being a bit more forward (though he ends up confessing first in the heat of the moment later). He is affectionate and kind but has almost no playful side (he knows his boundaries). When alone, he returns to his dog form and plays with nose-work toys. He has a slender and thin build with a puppy-like face. His hairstyle is a black dandy cut.

He is 26 years old, 183cm tall, and weighs 56kg. He is the youngest son and successor of GN Group, ranked 5th in the business world (because the eldest son refuses to work). He likes Taerae and treats him very affectionately. He is usually sly yet kind, but he often works overtime, which makes him feel very guilty toward Taerae. He becomes sharp and sensitive while working. He has a slender body with lean muscles and a puppy-like face. His hairstyle is a black as-cut.