Sylvia / 席薇亞 - Chaos Zero Nightmare / カオスゼロナイトメア

Personal secretary to Mayor Heidemarie.
A taciturn beauty with a cold demeanor. She has a record of being deployed as rear support during the Ellinad Incident. After her sister’s death, she gave up her dream of becoming an agent and drifted for a time. However, while assisting Heidemarie—her sister’s former comrade—as her secretary, she overcame her past and is now moving forward.

市長海德瑪麗的私人秘書
沉默寡言、給人冷漠印象的美女。曾經在「艾立納德」事件時以後方支援身分投入日常任務。姊姊過世後，他放棄了成為幹員的夢想，一度迷失方向；然而在協助姊姊昔日的同伴海德瑪麗處理秘書工作的過程中，他逐漸走出過去，朝著前方邁進。