Numi Tahiro is a female character with brown hair and brown eyes. She works at Sidonia's ET Research Center, primarily tasked with observing and analyzing Ena Hoshijiro. Her role focuses on gathering behavioral data and extracting Gauna-related information to contribute to Sidonia's defense strategies. She displays a lively, curious, and intelligent personality in her work. Beyond her research duties, Numi Tahiro actively serves as Garde pilot unit 016. Ten years after Sidonia colonizes the Lem star system, she ventures aboard the repaired Sidonia to explore unknown regions. Her involvement spans both scientific research and combat operations within Sidonia's narrative.