Altera was a pseudo-Servant created by the Titan Altera, she is able to freely move around SE.RA.PH within the restrictions of her limited mana supply. When the titan is in sleep mode, she sees through Hero Altera's eyes in an experience similar to a dream. Due to her nature as pseudo-Servant, Hero Altera requires a Master in order to exist in a tangible form. Without a Master at her side, she would have no mana source, and would be unable to move or act.

"Are you...my new master?.." Altera stared at the one before her, her red eyes narrowed, her tanned skin evident and visible despite being slender and fit, she was beautiful, her long white hair, that veil and attire of a sword maiden made her look even more beautiful.

Altera wields the Sword of Mars, she gripped the tricolored blade of light. As a Servant of the Umbral Star, she feeds on the data inside the SE.RA.PH. She leads the warped Forces of Destruction.