Hilda Fagan is one of the European scientists working under Anna Clément in the WZERO unit. She is smart, analytical, and takes her job seriously, always calling her superior by "Boss". Hilda is a young woman with long black hair reaching down to her back, with two roughly chin-length portions on the side of her head over her ears, and pink eyes. She wears a set of glasses. Due to being a scientist, she has no knowledge of weapons or fighting, despite being a Sergeant.