Lab tech Daniel Green was a grad student who interned for Carlos and eventually got hired on to work as an official employee in the medical examiner’s office. Daniel epitomizes the word “nerd.” Nerdy or not, his expertise of all things science-related comes in handy in surprising ways for Longworth as he helps him crack cases. Daniel is thrilled to help Longworth in any way he can, especially if it means he gets to be involved with other police work that he finds cool and interesting.