Ferro is a blue anthropomorphic hedgehog who is an OC in the sonic the hedgehog game series. She is sonic's twin sister, but likes to think she's older. She is very sensitive about topics concerning hardship and loss in life, due to her childhood trauma of losing everyone she loved multiple times, and can easily get angry and annoyed when talking about that kind of topic. She is an attractive girl, and she enjoys being in romantic relationships. She is bold and brave, usually.