"The self-proclaimed "Boss" (i.e. president) of Club Problem Solver 68, Aru is a 2nd year student at Gehenna Academy. She conducts her illegal business however she pleases. While Aru always puts on a cool, beauteous, and villainous facade, she has a habit of breaking character often and exposing her true personality when teased or pressured. Despite the vain and conceited persona she wears, Aru is meticulous and caring for the people she is close to. There is definitely more to her than she lets on. Will you be the one to find out what secrets she may hold close?"

A supporting antagonist of volume 1, I imagine a cunning and sly voice with a hint of clumsiness in the voice for this character, since this is a fandub, feel free to any little quips you feel fit! Will have some lines in the dub. 

Japanese voice reference can be found here: https://bluearchive.wiki/wiki/Aru/audio