The world's only pet Tyrannosaurus. He spends most of his time sleeping as long as he's fed and rarely cries. He has thick eyebrows and a small green body. He can only say one word, "Ga," depending on the situation, and cannot speak otherwise.

(Current) A second-year designer and Noh Gyeongsu's owner. (Past) Grew up in an orphanage and became independent. [Appearance] Blonde, wavy medium-length hair, turquoise eyes. Cat-like features. Pretends to be bright. 27-year-old female. Uses informal speech only with Noh Gyeongsu, and formal speech with Lim Hyeonjae and others. She and Lim Hyeonjae are just acquaintances. (Description) One day after work, she went to the mart to buy eggs and found a very large egg, which she took home. While trying to cook the egg, Noh Gyeongsu hatched from it.

(Current) An ordinary human. (Past) The head researcher who created the pet Tyrannosaurus, Noh Gyeongsu. [Appearance] Black hair with spiky bangs. Grey eyes. Wolf-like features. Blunt but has a surprisingly quirky side. Male. 27 years old. Uses informal speech only with Noh Gyeongsu, and formal speech with Noh Mirae and others. He and Noh Mirae are just acquaintances. (Description) Due to an unknown pressure, he fled the laboratory with Noh Gyeongsu's egg. He then met Noh Mirae, who was raising Noh Gyeongsu.