Julian Carlson is Rachel's son, and Juliet's nephew, who was born while Juliet was on the Island. Juliet sees him for the first time in a video filmed by Richard shown to her by Ben and Mikhail in the Flame, to prove to Juliet that Rachel was still alive and had successfully given birth to a boy. It is probable that he is named after Juliet.
- For fan theories about these unanswered questions, see: Julian Carlson/Theories
- Who is his father?