This, in addition to Jin's mob experience, may explain his familiarity with handguns as seen in "The Glass Ballerina" and "Through the Looking Glass." Similarly to the Chinese and Japanese naming system, the convention in the Korean naming system is to put the family name first in the person's name. Therefore, Jin's name should technically be Kwon Jin-Soo or Kwon Jinsoo, rather than Jin-Soo Kwon. However, when his name is spoken in the Korean flashbacks, it is said in the Korean manner.