Ascella is a Matagi hunter, specializing in hunting and processing wildlife. She lives within a notably populous mountain settlement in the manga continuity. Her appearance includes short, curly auburn hair, dark brown eyes, a practical brown vest over a tan long-sleeved shirt, a blue satchel worn around her waist, white pants, and dark black boots.

She demonstrates significant practical expertise in gutting animals, preparing meals, and tending to wounds. Ascella possesses an outspoken and confident personality, particularly regarding her own abilities, and displays a distinct interest in draking – the hunting of dragons. She forms a quick bond with Takita, a member of the draking airship Quin Zaza's crew, showing friendliness towards her and the members of her own settlement; Takita notes Ascella reminds her of Mika, another key draker.

Notable differences exist between her manga and anime portrayals. The manga depicts her riding a goat-like animal and consistently accompanied by her cat, Sako, with her mountain settlement forming a significant background element. Conversely, the anime omits Sako entirely, shows her riding a horse instead of a goat-like creature, replaces her established settlement with a transient camp featuring a caravan and campfire, and reduces her living situation to just herself and her grandmother residing in the caravan.