Sᴜɴɢᴊᴏɴɢ's Bᴀᴄᴋsᴛᴏʀʏ

Oh Sungjong doesn't remember most of his childhood, he feels like most of his memories were erased, and, some, they even don't match. He was - as he was told - born as a baby conceived by a Korean researcher and robotics scientist, his father, and by a woman, half Chinese, half American. He has always been told by his now dead father that his mother was an actress and that he was fated to follow his legacy and keep on saving people, giving them a second chance of living - as robotic dolls. The world should be pacific and people shouldn't die because of other's mistakes, and, Sungjong was the chosen, he would have said. Growing up was difficult for Sungjong, who have always wanted to go to the outside and have friends his age. The robots his father built or people he converted into androids were not enough. After all, he had no humans around him. Even his mother was now a robot. He doesn't even remember her being human. And, apparently, he had the mission to keep on going with his father's Creator legacy. His creations are Project 1.0, Sejoon, and the Units under Project 20360823, A, C, L, K and P, amongside other robots he has stored as experiences, so as updates. He has also developed a robot who grows up like a human, until they reach the adult shape when he was a kid, during his puberty. Jiseok and Jiho were built, no, converted, under that system.

Mᴇʟɪssᴀ's Bᴀᴄᴋsᴛᴏʀʏ

Melissa Oh, or, in her original country, the big Chinese Imperium, Wei Mi Sung. She was supposed to be around her fourties now, but, evidences of her past dictacted it to be not like that. It's, that the red haired woman used, not only to have other hair color than red, but also breathe. Melissa gave birth to Olive, whom his father named Oh Hyewon as a Korean name. But, she also is Sungjong's mother. From whom she got to receive 'Sung' as part of his name. Three years later, she mysteriously died and his father cried night and day to fix her. And, so he did. Sungjong has no memories of that but he knew his sister was around ten by then and she told him that their aboji found their mommy with her hair wet and dripping blood. Maybe that made the doll personating their mother choose to have a bloody red hair? Meanwhile Melissa was alive, she was an actress, and she was used often in action movies due to her extreme flexibility and her beauty, even if as human she wasn't as beautiful as she is now, as a doll. After five years without appearing, Melissa returned to Sungjong and Olive - who got ill and died - as an iDoll-ized human.

iDᴏʟʟs ᴀɴᴅ iDᴏʟʟ-ɪᴢᴇᴅ

Oʟɪᴠᴇ's Bᴀᴄᴋsᴛᴏʀʏ

Olive, also called Oh Hyewon, is Sungjong's sister. By Sungjong's birth, she was already seven years old, but she died when she was almost eleven, victim of an illness she was unable to heal properly, after staying for one whole week locked up in her bedroom. After a while she has been turned into an iDoll but she has always stayed in a pre-teen body. Since Sungjong's grown-up development system was developed with his father's help, when he was fifteen, she, supposed to be twenty two if she was alive, started to grow gradually, becoming younger than him, instead of older like she would have been. That makes Olive get trapped on her seventeen's instead of being twenty seven by now.

Mᴇʀɪᴅɪᴀɴɴᴇ's Fᴜɴᴄᴛɪᴏɴ

Meridianne has been designed to keep Olive some company. She has been made with base in Olive mother's childhood pictures and some random features his father has chosen as pleasing ones. Her personality has been built also as a shy yet vivid and nice girl, almost like some sort of perfect girl. She has been activated by Olive's eight birthday, having a 13 years old body structure and face. She has been upgraded when Olive was, currently pursuing a nineteen years old body and face. She has been named Merida Anne Lee, which was Olive's imaginary friend when she was little, later on called as 'Meridianne', a fusion of Merida and Anne.

Jɪsᴇᴏᴋ's Bᴀᴄᴋsᴛᴏʀʏ

Woo Jiseok was a boy Sungjong's father found alongside with his brother on the bay, near the privatized part of the shore that belonged to Sungjong's house. When he was found, he was a preteen, probably on his fourteens, and he has drowned while trying to save his younger brother's life from the other side of the shore, when a wave dragged them and, the younger being unable to sleep, only made the older one get dragged as well. After Sungjong's father captured the body, he has created a room where they both were councious and growing, in which each body was trapped so they'd live and grow, like some isolated container. When Sungjong made his discovery, his father turned them into iDolls, keeping their humanity and adding a whole protecting shell of technology to make their life more efficient, due to the advances of technology. By that time, Jiseok was almost nineteen.

Jɪʜᴏ's Bᴀᴄᴋsᴛᴏʀʏ

Jiho has been found by Sungjong's father on the bay just like he found his brother Jiseok. By then Jiho was about ten years old, being Sungjong's age. While he was kept on the container just like Jiseok was, Sungjong went several times to talk with the other boy, feeling like he was one of the few humans around him. Because Jiseok was older and going through his puberty, he would rather talk with the younger boy. Jiho was turned into an iDoll at the age of fourteen.

Pʀᴏᴊᴇᴄᴛ 1.0 - Sᴇᴊᴏᴏɴ's Fᴜɴᴄᴛɪᴏɴ

Sejoon has been created by Sungjong with the system he has developed, but not with the function of being just another doll. Sejoon is the first robot to acquire knowledge as time goes by, simulating the brain of a human and all the skills a human has. He was created to protect Olive and the other iDolls from the electronic systems that could damage them as well, tracking them down easily just like a scientist would. Later on, Sungjong programmed him to descodify codes he was not able to read through math calculations or any other scientific resources, sort of being Sungjong's database and lab helper. But his main function was to be Sungjong's confident and friend.

Pʀᴏᴊᴇᴄᴛ 20360823's iDᴏʟʟs

iDᴏʟʟ Uɴɪᴛ A's Fᴜɴᴄᴛɪᴏɴ

Unit A, Ahn Jaehyo was created by Sungjong to track down a guy Sungjong met during his puberty on a club in downtown. As result, Unit A is programmed to become a bartender and track down the guy, according to Sungjong's memories, memories that Jaehyo has inside of his drive disk, where he keeps his memories. As an iDoll hidden in between civilization, Unit A is some quite cocky guy but who tends to be nice and who has to fulfill his mission: track down Kim Yukwon and bring him to the base.

iDᴏʟʟ Uɴɪᴛ C's Fᴜɴᴄᴛɪᴏɴ

Choi Sungmin, formally known as Unit C, is in charge of tracking down other male Sungjong has found during his teens and his rebellion days, on a cell, back when Sungjong's father called the police to report his son missing, and he was found with that exact boy, who just got to speak with him, explain him where to go and help him run away from the prision that was his life. According to Sungjong and the other guy - Yuhwan's witnesses, he got to be set free, after all they were both the same age by then. Unit C, Sungmin, has the mission to track him down... and he will probably start off with the police records, won't he?

iDᴏʟʟ Uɴɪᴛ K's Fᴜɴᴄᴛɪᴏɴ

His name is Unit K, Kim Jungwoo. And his function is to track down someone Sungjong saw as a kid on the beach, with whom he went play, by swimming to the other side of the shore on his water wings and inflatable buoy. That kid was Shin Jongkook, who he has to track so he can find how he was able to pass through his father's security systems or how he did see the other, considering that he has bushes and a brick wall stopping other people to invade his house or his personal beach.

iDᴏʟʟ Uɴɪᴛ L's Fᴜɴᴄᴛɪᴏɴ

Lee Minhyuk, Unit L, has the legacy to track down an orphan Sungjong once met, most probably going to check on the orphanage first, due to the guy being slightly older than Sungjong. The guy's name is Taeil and that was an orphan from an orphanage on the perifery, raised by buddhas on a house just for boys. Unit L's mission won't be easy but he will eventually succeed, and, when he does, he has to proof to the other that he knows Sungjong.

iDᴏʟʟ Uɴɪᴛ P's Fᴜɴᴄᴛɪᴏɴ

Unit P has the mission to track down Pyo Jihoon, someone Sungjong just casually met once, but, he doesn't remember where he does. It has been more than one time when they met but the space reference is always null. He never really has the clue where it all was. He has met him during his childhood only but he has a clear face on his mind. Unit P, Park Kyung, has the most difficult legacy from the  five Units, so, the others will join him as they finish their jobs.

Hᴜᴍᴀɴs

Oʀᴘʜᴀɴ Bᴏʏ's Bᴀᴄᴋsᴛᴏʀʏ

Chronologically, Taeil was the first boy to meet Sungjong out of the few friends he has made. Taeil was an orphan boy Sungjong saw once abandoned and with whom he has interacted, cheering him up. In fact, that orphan boy was lost on his own, and it was snowing. But all they both did remember for sure was his parents calling him over and Sungjong leaving, pulled by Olive, who came to his rescue, sort of. He still had that face on his mind like he had seen him more that once. Maybe begging in the street for some money to go buy food, the poor boy? He couldn't tell but that face was definitely familiar.

Jᴏɴɢᴋᴏᴏᴋ - Bᴇᴀᴄʜ Bᴏʏ's Bᴀᴄᴋsᴛᴏʀʏ

Shin Jongkook and Sungjong met once when he went swim with his sister and her robot babysitter and none of them noticed the toddler escaping to the other side to reach a boy his age, slightly older, that was building a castle in the sand and making a fortress with his own hands. Chronologically, that corresponds to the second person he has met. And, he does remember he has told the other he had robots living in his house, and the other cried and replied that he preferred having nobody but his mom on his house. By then the boys were five, six, seven, both of them. And that, Sungjong has never forgotten because he has promised to himself he'd find why his only friend has cried.

Jɪʜᴏᴏɴ's Bᴀᴄᴋsᴛᴏʀʏ

The next one Sungjong has known was Pyo Jihoon, a younger guy, and all he phisically remembered was the boy stealing money from a public fountain on a park. That was one of the times he lost himself while going to the big city with his mother. But also, he has met him not only that time, but also other times. Leaving a certain bottle with a message tied to the same tree branch on the same park, there was Sungjong when he could. He only did that four times and they met those four time in different, distorted locations and did play around, but even if he didn't remind the other well he knew the other certainly reminded him.

Yᴜᴋᴡᴏɴ - Tʜᴇ Cʟᴜʙ Aᴄǫᴜᴀɪɴᴛᴀɴᴄᴇ's Bᴀᴄᴋsᴛᴏʀʏ

Sungjong has met Yukwon when he first went out, taking his robots along to be less notorious that he was alone. Still, he noticed the guy's loneliness and went talk to him. And that's how Yukwon and Sungjong met, both fifteen, sixteen rebellions trying to make more friends and act cool. After that moment, none of them has ever met again but Sungjong still think that the other's friendly grin was something he should look for now that he was looking for friends - and answers.

Yᴜʜᴡᴀɴ - Cᴇʟʟ Cᴏᴍᴘᴀɴɪᴏɴ's Bᴀᴄᴋsᴛᴏʀʏ

Both Yuhwan and Sungjong were caught up into the same destiny of being arrested for no apparent reason. Well, Yuhwan was accused from deviating and corrupting Sungjong and Sungjong ran away from his own home - like he did every night, but that night he took longer and fell asleep somewhere after getting tired to the extent of falling asleep around some stranger like Yuhwan. Still, Sungjong has been told by Yuhwan, who was supposed to having a gaming night after a birthday - and because of that he was allowed to stay out of his house and that's why he went out with his friends - that he was supposed to go home before his parents got worried.  And that's how they eventually met.