Sunny Emmerich

Sunny Gurlukovich is the child of Olga Gurlukovich. Her name and appearance were confirmed in the TGS2007 Trailer.

Olga gave birth to Sunny at a hospital run by The Patriots, who took the child away from her, and sent her a photograph of the child monthly. If Raiden were to have died during the Big Shell incident, then Sunny would have been killed as well, by the Patriots. Olga eventually gave her life to protect Raiden, and the child who she had never met.

Metal Gear Solid 4
It is unknown what role Sunny will play in Guns of the Patriots. Raiden and Solid Snake have both remarked that they would ensure her safety at the end of Sons Of Liberty. In promotional artwork for MGS4, Raiden has been seen holding a small child, but it is unknown whether this is Olga's child or Raiden's own.

In the TGS Trailer, Sunny is shown conversing with Otacon and Snake, and later with Naomi.