Coltia (or Colt for short) is a "breeder assistant" for IMA in Monster farm (Monster rancher in english) 2. She is seen in the anime as a young explorer and also is one of the main stars in the Monster farm 4koma manga series. She is good friends with Holly (A breeder assistant from Fimba region and the main character of the anime.) However, Colt does not know Holly until she meets in the anime. She also makes an appearance as the mail lady in Monster Rancher DS.
Oldest son of the Hikizuri Family.
Jirou is at university to study engineering. On traveling back to Tokyo from a holiday, he meets a young girl named Naoko, who is traveling with her maid. At this time, the Great Kanto Earthquake of 1923 hits, which stops the train and causes Naoko's maid to break her leg. Jirou delivers Naoko and her maid to Naoko's family, then walks away without giving his name. Several years later, Jirou is promoted to chief designer for a fighter plane competition sponsored by the Navy, which ends in a failure. Disappointed, Jirou visits a summer resort where he runs into Naoko again. Right after Jirou answers that the one he loves is Naoko, she tells him that like her mother, she is afflicted with tuberculosis and may die one day. She goes to a sanatorium to get better. They are engaged, but Naoko decides to leave after to marry Jirou. After their marriage, she is bedridden and waits for her husband to return each day. Days pass and she decides to leave. As the successful launch and flight of Jirou's plane ends, an abrupt and quick breeze goes by, a sign of Naoko's death. She is last seen fading away in a dream after he emerges from his nightmare of the war.
Anju is Karin's younger sister and she absolutely loves her, close to the point of obsession. She will do anything for Karin. She has not quite awakened as a vampire, causing her to be somewhat sensitive to the sun, and resulting in her only attending school on overcast days. However, she does have an amazing control over bats despite this. Anju is very reserved, speaking in a quiet manner and wears a Gothic Lolita attire. Boogie-kun is her companion, whom she carries around and is her favorite of her dolls, something she enjoys collecting. In the anime, Anju's blood preference is jealousy when she awakens. In the manga, it's loneliness.