The Esper Saga
Leviathan is the Esper of Water and of the oceans. He appears as an enormous sea-serpent, and is one of the oldest and most respected Espers. He has been asleep for many centuries, however. Leviathan has no known children. His Sanctum is deep beneath The Great Central Ocean.
Leviathan was recently rudely awakened by Sarasvati, who tried to kill him and Shiva as part of a ritual. Gwendolen and Gehenna interfered, and rescued the great Esper, who has rejoined his brothers and sisters in Pandemonium – fully awake once more.