Joyce Kim

Joyce Kim (Ally Maki) was never shown in a single episode until The Staircase Implementation and she also mentioned in various situations throughout the first season. She is one of Leonard's former 'girlfriends' whom was mentioned by his friends. They were only together for twenty-seven days, after which she defected to North Korea. We still aren't sure if it was out of free will, or if it was forced in order to give an excuse to break up with Leonard. We can only assume from Leonard's friend mocking, she went to North Korea in order to break up with him. Flashbacks show during The Staircase Implementation, Leonard was working on rocket fuel at the time under a DARPA contract and Joyce Kim was a Spy attempting to obtain his work.