Rosemary

Rosemary is a Systems Analyst and is Raiden's girlfriend.

Early Life
Much of Rose's true past is unknown. Rose is in actuality a Patriot spy. She was ordered by the Patriots to change her appearance to match what Raiden would find attractive in order to be his perfect match. As a result she changed her appearance, clothing style, even the color of her eyes in order to meet the standards of Raiden's psyche profile.

Rose met Raiden in front of Federal Hall two years prior to the Big Shell incident. A group of middle-aged Japanese women came up and asked Rose which building King Kong had climbed in the movie. She replied that it was "probably the Chrysler Building". Raiden overheard the conversation and told them that she was wrong, and that it was the Empire State Building. The two argued about the matter so long that the tourists decided to leave. They ended up going to the Skyscraper Museum in Battery Park to see who had the better recall. However, by the time they got there the museum was closed. The two departed from there.

The next day, by "coincidence" the two discovered that they worked in the same military base. The pair went on their first date that night to the Empire State building. After that they went back to Raiden's apartment and watched King Kong several times. Unknown to Raiden, but as per the Patriot's orders, the two began dating. Though during their relationship, Raiden would often be distant and not allow Rose to know too much about himself or his past. He would never spend the entire night with her and would never let her into his room. Eventually, Rose forced her way into his room. Inside, she discovered a empty, barren room. Only a small bed and a desk within. Rose's forced entry enraged Raiden and caused him to raise his hand against her.

Two years after they first met, Raiden was called in for his mission to the Big Shell. Rosemary was also called in as Raiden's support during the mission, under the orders of the Patriots. This upset Raiden, but he soon accepted her being involved in the mission. Rose supported Raiden on his mission by giving him information, saving his progress, and having general conversations. Late in the mission, Raiden was captured by the enemy. Rose contacted him in order to give him her support. It was then that he told Rose of his true past as a child soldier and she revealed to him that she was a Patriots spy and that she was pregnant, before having her communication line cut. Soon after that, unknown to Raiden, Rose was removed from the operation and held by the Patriots.

After Raiden had stopped Arsenal and killed Solidus, Rose was apparently released (or escaped) by the Patriots. She asked his forgiveness and the pair swore to find their own futures together.

Rosemary returns in Metal Gear Solid 4 as a psychological counselor for combat stress for CSP (Combat Stress Platoon). She will give tips to Solid Snake as well as tips on stress on the battlefield. At the end of Metal Gear Solid 2, it appeared as if Rosemary and Raiden were engaged but now as of 2014, their relationship had ended.

Behind the Scenes
Originally Kojima had intended Rose to be dead at the end of the game, but this idea was scrapped as it would leave the players to wonder whether she even existed at all.