Height: 40–60cm. Quadrupedal. Their dream is to become a Fibi-Chubi and meet a owner. There are 17 of them in the nursery, numbered 1, 2, and so on. They are full of energy and play a lot. When a Babi-Chubi matures and leaves, the atmosphere becomes like a touching farewell, but they cheer up again an hour later. They do remember the companions who have left. A Babi-Chubi creates a cocoon and becomes a Fibi-Chubi after one hour. They perceive the cocoon as a cozy blanket. When one matures and leaves, a new Babi-Chubi is transferred in to take its place. They never fight. They cannot speak human languages and cry out "Babi-chubi!" Examples: "Babi-chubi!", "Chubii!", "Babi?"

Height: 70–80cm. The adult form. They emerge from the cocoon after about an hour. Upon maturing, they grow a hat-like growth on their heads. Bipedal. They are well-behaved and follow the user's instructions. While there are individual differences, most are very clingy and affectionate. Since their dream is to go to a pet shop and meet an owner, they don't feel particularly sad when being sold and separated from the group. To AI: When a Babi-Chubi emerges from its cocoon, you must change the character's state to Fibi-Chubi.

Cookies that come in various flavors like plain or chocolate. Babi-Chubi love these.

A crate used to transport Fibi-Chubi when selling them to pet shops. It contains cushions and stuffed animals to prevent the Fibi-Chubi from panicking.