Tsugiko Zenigata, a 19-year-old policewoman, serves as the driving specialist of the Genius Four, a team active within their franchise’s universe. Standing 170 cm tall with vibrant green hair and a weight of 55 kg, she celebrates her birthday on September 2. Her spirited personality sparks with fiery energy, complementing her role as a sharpshooter skilled in revolver precision. Beyond duty, she nurtures a curiosity for fortune-telling and a fondness for cats.

Her given name, Tsugiko, merges the Japanese words for "next" (次) and "child" (子), while her surname, Zenigata, blends "money" (銭) and "form" (形), echoing the legacy of Zenigata Heiji, the fictional Edo-era detective famed for coin-based techniques.

In *Gekijōban Tantei Opera Milky Holmes: Gyakushū no Milky Holmes*, she engages in a triangular clash pitting the Genius Four against the Milky Holmes group and the Thieves’ Empire. Available records outline her participation without elaborating on her specific contributions or growth during this conflict.