TV-Series
Description
Natasha, alias Professor Um (ウーム教授), bears the full name Nataliya Vasylchenko (Наталья Васильченко). Her title "Professor Um" originates from the Russian term for "mind" or "intellect," aligning with her scientific acumen. She operates as Zvezda's foremost scientist, technological specialist, and mascot.

Her appearance features blue eyes and waist-length blonde hair. She perpetually dons a white lab coat over black undergarments and obscures her face with a unique mask during scientific duties. Despite her technical authority, she asserts being fifteen years old. Her speech reflects a Hiroshima dialect, contrasting her Ukrainian heritage.

Born in Ukraine, Natasha endured a solitary childhood preoccupied with robot construction, isolating her from peers. In youth, her parents guided her underground to a realm she dubbed the "land of fairies." There, she lost physical contact with them, resulting in their disappearance and presumed death. This incident inadvertently displaced her from Ukraine to West Udogawa, Japan. Stranded underground, she discovered and engineered the robot Roboko. She remained secluded in the tunnels until Kate Hoshimiya located and extricated her, integrating her into Zvezda.

Within Zvezda, Natasha commands all technical and scientific endeavors. She engineered the organization’s transformation technology, leveraging the phlebotinum properties of magical udo (mountain asparagus). This substance energizes Zvezda’s base, enables member transformations, and fuels Roboko. Her inventions occasionally facilitate Yasubee Morozumi’s disruptive exploits through his misuse of her devices.

She maintains loyalty to Kate Hoshimiya as her rescuer and acknowledges Roboko as her creation. During clashes with the opposition group White Light, she remarked openly on White Falcon’s pronounced physique.

Throughout Zvezda’s critical missions, Natasha participated in pivotal events, including failures in the magical udo supply. When governmental forces breached Zvezda’s base, she was apprehended alongside other members. She later escaped captivity and rejoined the collective struggle against the Tokyo Governor’s forces in the culminating conflict, her scientific proficiency remaining vital throughout.