Klaus Backus was born into a korean & Chinese-American wizarding family in the United States; Boston, Massachusetts to be exact. His mother being a pure-blood wizard named Natalie and his father a half-blood named Jeremiah. Natalie wasn't the most loving of mothers, but at least she was there. As for his father he was rarely ever seen home, due to him having a job that caused him to travel often. Due to his absents Klaus' father allowed him to be in his office while he was away. During these times, the young boy found books on mythologies both Muggle & Wizard a like, this sparked an interest within him, that would later prove to be the one thing that got him along in school.
At the age of 11 Klaus received a letter by Owl addressed to him from a wizarding school in Salem, Massachusetts. He wasn't at all surprised by being accepted into a prestigious school. He gingerly accepted and spent the next 4 years of his life attending a school that would soon become a nightmare for him. Klaus started off his first year differently then most, he was sorted into an unpopular house that not many people took seriously. Although he took pride in even being chosen for it. He spent most of his first year in the schools library, and had even, on occasion, fallen asleep reading a book. From the onset, he was immediately picked on by other students for his kindred spirit and bookish disposition. He would often be bullied in the hallways, sometimes it would get physical other times it would be verbal. More then a few times other students would even start duels with him, most of the time, it would end with both of them in detention, and on some occasions a few injuries.
During his 2nd year things got a little better for him, although somethings remained the same, for example the bullying didn't stop, but it did lighten up a little. He even managed to make a few friends who where also interested in mythology; Their names being Kali & Galleo, both of them being siblings. They even have discussions on the different versions of the same myth, this immediately branded him as a nerd, though he really didn't mind, because, he had been told by someone, that nerd was just a four letter word for people who made 6 figures. Klaus went onto his 3rd year, this year was the same as his second, except near winter holidays he received an owl concerning Galleo, it had said that Galleo had been in an accident, that had taken his life. This crushed him, Galleo had become his best friend over the course of a year. The letter had also said that Kali would not be returning to school after break. This left Klaus with no friends for the reminder of the time he spent at the Salem institute.
During Klaus' 5th year his father had taken up a job reading ruins in northern Ireland. Klaus' mother didn't wanna go, this sparked heated arguments between the 2 which eventually ended in a divorce. The young by had gotten a choice as to which parent he wanted to live with. He decided to move in with his father, and in doing so he transferred to Hogwarts School of Witchcraft and Wizardry. This had proven to take him back to being happy, as many of the students were actually polite to him the last few years he spent attending school were his happiest.
After graduation he decided to travel through out Europe for 5 years, Learning about the Muggle & Wizard mythology from the many different countries. When he finally decided to return back to Ireland and move back in with his father, he was at the age of 23. He had come back in hopes of possibly finding a job as a professor or even opening a book shop.