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 (Mega Man).
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.