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The robotic mascot of the Cosmo Puella in the UMA STARS (umamusume) fictional anime show for Umamusume's April Fools' 2024.
Resembles an oversized brain with rudimentary eyes in a robot suit. It being voiced by Sasaki Hitomi (Admire Vega (umamusume)'s voice actress) implies that it might be a manifestation of Admire Vega's Twin Sister (umamusume).