Also known as: レヴィアタン, 妖将レヴィアタン
Fairy Leviathan, known in the Japanese version as Siren General Leviathan, or simply Leviathan, is a member of the Four Guardians of Neo Arcadia in the Mega Man Zero (Series) series. She was created from X (Mega Man)'s DNA data after the Maverick Wars to clean the world's oceans. Leviathan's schematics are based off X's capabilites of underwater combat. Some time later, she became a military general of Neo Arcadia, commanding the Deep Sea Squadron, Neo Arcadia's navy force. she makes an appearance in Mega Man ZX and Mega Man ZX Advent as Biometal Model L.
Her design consists of Blue Eyes, skin that resembles a White Bodysuit, Blue Armor consisting of a Helmet with Head Fins and a red Forehead Jewel, and attire that resembles a blue Crop Top, Blue Panties, and Blue Thighhighs. Her weapon is a Spear Polearm.