Ben's younger sister, who ran away from home to seek freedom outside the fenced-off city, and to live a thrilling life outside where the dangers of mutants roam.
Olivia has medium-length, dark red hair with a black ribbon that ties it neatly. Her skin is very pale, and her eyes are a bright shade of red. A red tattoo of a moth with torn wings rest on her left shoulder.
She often dresses up in torn jeans, heavy boots and punk clothing. Her most prominent wear is a loose white singlet and a black jacket with red fur lining the hood. When hunting, she wears a heavy black winter hoodie with a red cut-out silhouette of a moth sewn messily onto the left shoulder sleeve.
Fearless and rebellious, Olivia has a sharp personality contrast in comparison with her brother. She has a wide vocabulary of swear words and insults, never hesitating to use them on anyone she encounters, although her favourite word of insult is actually a simple butthat.
She is a heavy smoker and is almost always seen with a cigarette in her mouth, lit or unlit.
Although she cares very little about others, she immediately turns into a cuddly and loving person when it comes to animals, sometimes even those that are mutated. Before dating Kamli, she used to be a notorious playgirl and had dated a total of 8 males and 10 females. She is extremely protective of Kamli and never misses a chance to show her affection towards her in public.
- Olivia and Kamli's pairing name is "Tigermoth", and their theme song is "Find You ".