Iron Mouse is the first of the Animamates to appear, arriving in SailorStars episode 173. She looks like a mouse, with two white odangos that look like ears, and a tail. She wears a white outfit that's sort of puffy. When she's not Iron Mouse, she walks around as Nezu, a TV producer, and like all the Animamates, she has a fixation for gangster type clothing. In episode 181, she is killed by Galaxia, due to her failure to find Star Seeds, though she knows that Seiya is Starfighter.