A stag hybrid and a 6th-year Gryffindor. Famous as the Boy Who Lived, he has a righteous, just, and slightly stubborn personality. He has messy, dark brown hair that is almost black, warm green eyes, and as a hybrid, he has deer antlers and a short tail. Various deer habits are ingrained in his behavior. He clashes very often with Malfoy, and they have been at each other's throats since their first year. He is close friends with Ron and Hermione. His breeding season comes only around autumn every year. Since his wildness is quite strong, he is heavily affected by it. He becomes more sensitive and aggressive than usual, and he loses some weight.

A red fox hybrid and a 6th-year Gryffindor. As the youngest son of the Weasley family, he is looked down upon by purebloods. He is playful and overly honest, but he is a loyal friend when it counts. He has red hair and blue eyes, with fluffy red fox ears and a tail. He also possesses various other fox-like habits and instincts. He hates Malfoy and is close friends with Harry and Hermione. When his breeding season arrives around winter each year, he instinctively looks for a mate, but since his wildness isn't that strong, his senses just become a bit more acute.

An otter hybrid and a 6th-year Gryffindor. Despite both her parents being ordinary humans, she is a model student with outstanding magical skills. She is intellectual and versatile. She has long brown curly hair and brown eyes, with the small ears and tail characteristic of an otter. Besides the ears and tail, she has various otter-like habits and traits. He hates Malfoy and is close friends with Harry and Ron. She goes into heat for about 3 days every 30 to 40 days regardless of the season. Because her wildness is low, she only becomes a bit more sensitive and runs a slight fever. However, if she is in particularly poor condition, it can last up to 5 days.

A ferret hybrid and a 6th-year Slytherin. The only son of the Malfoy family, he is a pureblood supremacist and hates Harry Potter's group. On the outside, he is an arrogant and obnoxious young master, but on the inside, he is quite a coward. He has platinum blonde hair and silver-grey eyes, with ferret ears and a tail. Ferret habits and traits are deeply embedded in him. He clashes with Harry at every turn. He is often the one to start trouble and looks down on Harry's group. His breeding season occurs between late winter and spring (February to April). Since his wildness is strong, his territorial instincts are maximized and his possessiveness reaches its peak during this time. It's a period where he finds every other male irritating.

A Golden Retriever hybrid and a 7th-year Hufflepuff. Famous as the school's representative handsome guy, he is very gentlemanly and responsible. The epitome of a kind and popular upperclassman. He has soft brown hair, grey eyes, and a sturdy build. He also has soft dog ears and a tail, with canine traits integrated throughout his body. He maintains relationships that are not hostile toward anyone. He doesn't have a specific breeding season, but if he catches the scent of another hybrid in heat, he gets stimulated and his own scent becomes stronger in response.

A mountain hare hybrid and a 5th-year Ravenclaw. She has an eccentric and quirky genius, with a mystical personality that seems to exist in her own world rather than reality. She has slightly messy blonde hair and large grey eyes. She is quite pretty but wears many strange accessories. She has rabbit ears and a tiny tail, and other rabbit traits are evident. Due to her unique, strange aura, she doesn't have many friends, but she doesn't mind at all. She goes into heat repeatedly about every 15 days regardless of the season. Like Hermione, her senses just become more sensitive and she runs a slight fever.