[Celeste Arbiter is an Accel World OC I designed for my little sis, EmpressAndromeda]

A duel avatar is manifested from your subconscious, based on your hopes and dreams as well as your fears and insecurities. Since the avatars are rooted from a portion of your mind that is not within your control, and is difficult to interpret, it is hard to really truly determine what your own avatar might be like, and even more difficult to determine somebody else's, but this is my best attempt at it.

The color blue in Accel World emphasizes one's desire to overcome their life obstacles through their own grit and determination, and blue duel avatars are known for their outstanding melee combat. My sis has always had a strong personality, from the day she was born. Even though she doesn't always realize it, over the years she has become very strong, both physically and emotionally. Life always has new obstacles for her, partially because life sucks, but also in part because she always challenges herself and reaches for higher goals. And she often seeks to overcome these challenges through her own means. Even when she asks for help, she doesn't often ask others to fix her problems for her; she works to find the information or the strength to handle things on her own.

My sis has also, from a very early age, acquired an acute sense of justice; a powerful mindset that not only recognizes the difference between right and wrong, but drives her to do something about it. She isn't the type of person who can just watch someone get bullied or mistreated. Even if that someone isn't one of her friends, or is someone she's never met before, my lil sis hops on the opportunity to step in and set things right. ...Especially if it involves the sweet feeling of getting payback on the antagonizer at a later time. Because just as potently as she has a mind for justice, she has a mind for vengeance as well.