


These changes are not depicted in her sprites. Leviathan received a small redesign in Mega Man Zero 3, giving her large bangles on her wrists, more blue on her boots, and gold accents to her hips and shoulders. To highlight her femininity, Leviathan's torso armor resembles a female swimsuit, her gauntlets are long like opera gloves, and her boots have high heels. She wields a harpoon-like Frost Javelin, the size of which she can alter, and she uses it to create ice and launch torpedoes. The back is mounted with a long dorsal fin-like jet, which she uses to propel herself through bodies of water. Her helmet frames her face in such a manner as to resemble hair, with the sides forming the 'fringe' and a seashell motif forming the 'bangs'.

Her name is derived from that of the biblical sea monster, Leviathan, which typically refers to any large sea creature. Her armor is colored blue, symbolizing her alignment with water and ice. Like her siblings, Leviathan's armor is based on that of her biological origin, X, with thematic alterations. Concept art detailing Leviathan's Mega Man Zero 3 redesign.
