She is voiced by Yukiyo Fujii in the Japanese version of the anime and Chelsea McCurdy in the English version, the former of whom also voices Patema.
Tetora looks like a teenage girl with pink, medium-long hair and several pony-tails. She is seen wearing her "Galaxy Idol" outfit; her vest, a piece of Phantasmal equipment, is capable of reflecting light and creating sparkles everywhere. In the light novel, her boots have halos underneath them, but they are not seen in the anime.
Tetora is a rather playful person who enjoys teasing others, especially Naotsugu due to his weakness towards strong women. Confident in her abilities, she is also determined to help others. She is rather self-confident and slightly arrogant as part of her charismatic attitude, which she uses to boost morale on the battlefield.