Leviathan

Found in the Feymarch, he must be fought so Rydia can acquire the Leviathan summon. Leviathan has two forms, one in which his mouth is open, one in which it is closed. When his mouth is open, Leviathan will use Tidal Wave to attack the party for considerable damage. When his mouth is closed, Leviathan casts Blizzara on you or a party member. Leviathan is easier to defeat than Asura, as his attacks only do about half as much damage, and he has an elemental weakness to exploit. Male.