Kai Mercer

Kai Mercer is a young Sethian citizen. He's the younger brother of Abigail Mercer, and a survivor of the 2nd Icecrown Incursion.

Origins
Kai was raised in Icecrown City, and was a fairly firm believer of the Sethian Truth during his early childhood. Following the disappearance of his parents, however, and his sister becoming his primary caregiver, Kai grew increasingly hostile and withdrawn. He refused to partake in school and regularly avoided social company, spending most of his time on the streets. Indeed, many of the locals in his neighbourhood often mistook him for the regular beggar of their street. Kai avoided home due to his sisters' abusive partners, whom he often had confrontations with.

Soulcreek
Kai was thirteen during the events of the 2nd Icecrown Incursion. He and his sister found refuge from the Blacklight outbreak with Johnathon Barrow's group. A few days later, however, Abigail left Kai alone in an attempt to find more survivors. Despite pleading for her to stay, Kai was left alone. Abigail would later suffer an attack by Faded and become infected, forcing the Glitched to execute her.

Later on, the Glitched came to visit Barrow's group of survivors. Barrow had taken partial responsibility for Kai at the time, and given him the job of managing the groups' supplies. Kai met with the Glitched and, despite his hostile attitude, managed to maintain a fairly normal conversation. In return for giving the group supplies, he asked that they bring him 'something cool' from the Institute.