Galena Chrysotile has short, silver hair with a slight purple tinge. Despite how it looks, this hair colour is actually natural. Her eyes are bright green, similar to Gabriel. She also does not wear any jewelry or makeup, though her face is naturally beautiful. Her skin is rather pale and because she is only fourteen, she is not very tall. She most commonly wears black skinny jeans. Over the jeans, she wears a brown belt with ammunition and a cellphone on it. Her shoes are red, faded converse that are mostly worn out. She usually also wears a black "Lynyrd Skynyrd" T-shirt with a white graphic that is so faded it looks dark grey. Over the shirt, which has short sleeves, she wears a dark blue button-up that is open and has the sleeves rolled up. The back of it has a red 'A' and the words 'Alchem Corp'. In the winter she wears a black trenchcoat with a brown hood like a parka.
Born twenty years after the series, Galena is an anomaly. She is the daughter of Gabriel, but as of the series he has not conceived her. Thus, she changed her last name and went back in time. However, she only went back in time due to her father's machine, a re-purposed DeLorean based off the one used by an old friend of his. After Android 00 and Android 01 were created, they began destroying everything and killing everyone. Luckily, Gabriel's machine allowed Galena to return and stop their creation. She harbors animosity for Chase McFly, due to him being an Android. She still loves her father despite creating Hound and Tiger.