Codenamed FI-03, the Neptune is a B.O.W. based on the ferocious great white shark. It was developed as part of an experiment to determine the compatibility of the T-Virus with marine life. Its already imposing size and aggression were greatly enhanced, and it also displays unrivaled tenacity—The King of the Sea really would be a fitting name for this creature.
While one large and two medium specimens appear in-game, the largest of the three will of course have left a considerably deeper impression. Its combat ability when in the water is not to be taken lightly due to the instant-death attack it can inflict when the player is walking around the water tank perimeter. Once the tank is drained however, the helpless creatures can be easily defeated from a distance, and perhaps it is this contrast that had the greatest impact of all.