Khun Hachuling

Hachuling (하츨링, Hahcheulling, Hachling, "Hachuling") is a Ranker, a defected member of the Koon family, and Koon Agero Agnis' older brother. He may be biologically related to Agero but they don't share the same mother. He has been referred to as Hachuling by one of his companions but it is unclear if this is a nickname or his real name.

He is a member of the Walhaiksong, a non-government organisation and claims that since joining the organisation, he has separated himself from his birth family.

He is shown to be able to hack into Koon's Lighthouse (supposedly a pretty difficult feat to pull off) and he controls Lighthouses with some kind of gaming console. Take note that hacking into a Lighthouse is unlikely a scout ability but is likely, the ability of someone very good with technology.

Notes and Trivia

 * Although fans originally speculated that he was a Light Bearer seeing how he hacked into Koon's Lighthouse, SIU has stated that he is actually a Scout, and it can be assumed the hacking is simply a skill he utilizes against enemy Light Bearers.
 * It is debated whether he is a Ranker or a High Ranker. Although it is not explicitly stated, one could be lenient to the concept of High Rankership since he is a member of Walhaiksong.