Sophia's overall personality is similar to Amamiya Kokoro; she is soft-spoken, and kind, but also shy and sometimes clumsy in spite of her job as a spy, yet hardworking and cheerful. While a glimpse of her personality was shown on her pre-debut stream tweets, during a debut stream it was revealed that Sophia does indeed have an adorable voice and rather calm personality (compared to most of her other debut-mates).
While Sophia was originally considered as the most "seiso" member out of her debut wave, this has since come into question by both the fanbase and her debut-mates due to occasional moments of lewdness and many "weird but funny" stories.
Via her streams and videos, she has shown many of her creative skills just within a month since her debut, including but not limited to: songwriting, composition, 3D modelling and animating, video editing, and so on.
On the other hand, as she continued to stream Sophia's funny side was also gradually exposed; the most remarkable story of hers being her notorious addiction to mentsuyu (a noodle sauce composed of ', soy sauce, ', and sugar): during her first 1-on-1 collab with Shishido Akari, she revealed that she thought mentsuyu and soy sauce were the same thing, and uses mentsuyu for many dishes in place of soy sauce; and while talking about her story of making cookies on another stream, it was explained that she made mentsuyu and cheese-flavored cookies, which surprisingly tasted nice for her.