An aquatic elf Expert Class NPC serves as the dragon's castellian. S/he is also devoted to the dragon. The degree to which the dragon returns the affection is up to the DM and the comfort level of the players. (There may even be some half-dragon youngsters swimming around.)

A suite is set aside as the elf's quarters near the dragon's lair with comfortable 'waterbeds' (which are pools of clean seawater, complete with barber shrimp, cleaner rasps and other oceanic groomer species.)