(Chaos VIII) Ultrastorm Leviathan

Lore
An entity of overwhelming justice had been born to do battle with Leviathan, the epitome of destructive malice. The gods' plan would finally come to fruition. The giant beast itself also roared and writhed with anticipation for the decisive clash.

Acquisition
Evolve (Chaos I) Ultrastorm Leviathan with Leviathan Catalyst seven times.

Name origin
Leviathan is a creature with the form of a sea monster from Jewish belief, referenced several times in the Hebrew Bible.