The prototype for Signal made by Otoi-sensei and Masanobu. Originally he was seen with silver hair and a grey styled outfit. He was a very kind and gentle robot but then one day Masanobu made some changes, upgrading him into a highly skilled combat robot. His look then changed to black long hair and dark clothes with two massive blades connected to his arms. It also appears that he conducts electricity through his hair and then charges that power through his eyes like a laser. These changes were not entirely for the best. Now he seems to be VERY nearsighted and if he should happen to use the laser or get too worn down he passes out. He has what appears to be robotic narcolepsy. He and Signal constantly fight and tease each other, but Pulse seems to have a soft spot for Chibi Signal and often talks with him. It also appears he was/is friends with Kris.
The 'mother' of Midarezaki family. She is twenty years old, however, she has an appearance of a little girl with a cat's ear and a cat's tail. Her real name is 'Kyoukya Eaeriaea (ã‚ョウã‚ã‚¡ï¼�エアエリアエア)', and she used to be worshiped by the people of an underground kingdom named 'Shangri-la', however, she ran away because she felt something missing from her life. Due to her past of being worshiped, she has very arrogant and destructive nature, but despite her personality, she is actually very caring about her family. She has an ability named 'Keitai Denwa (æ�ºå¸¯é›»è©± lit. cell phone), which allows her to manipulate a person's mind.
Formerly known as Senko Himemiya (å§«å®® å�ƒå�, Himemiya Senko), she is YÅ«ka's biological sister and is the last one to join the Midarezaki family. She was the former 'Solitary Doll' before YÅ«ka was born. After YÅ«ka became the next 'Solitary Doll', she tortured her in various ways and even gave money to her classmates to bully her. However, she remembered the promise with Ginichi Kizakura, now Ginka Midarezaki, and regrets her wrongdoings. She actually doesn't have Enka's DNA, but she becomes a member of 'Peaceful Family Operation' by KyÅ�ka's ability.
The nine-year-old 'eldest daughter' (second daughter after the end of the first book) of Midarezaki family. Comes from 'Demon's Family' Himemiya, she was continuously abused by her family according to their tradition called 'Solitary Doll', especially by her biological sister. Despite her past, she has a very calm and gentle personality. Her original name is Reiko Himemiya.
The three-year-old 'youngest son' of the Midarezaki family. He is a biological weapon that bears the name of 'The Black Thirteenth' (黒��三番, Kuro no Jyūsanban?). Three years ago, he destroyed the labratory where he was made and ran away, and it seems that he is currently suppressing his past memories. He likes to watch TV.