The subject in question is a former mail-rider from the First Unit who was Captain Zola's lover until his demise. Afterward, Salia took command of the unit and became its second-in-command. Despite being responsible for Ange's death, she harbors deep resentment towards her and attempts to sabotage her Para-Mail, causing it to malfunction during a mission that results in Ange crashing into the ocean while battling a dragon. According to Ersha, Hilda shares similarities with Anges when she first joined Arzenal. Her admiration for Zola's sexual prowess remains unwavering even after his passing, which led her to seek out similar experiences with Rosalie and Chris in Zola's former room.