So yeah...
DESCRIPTION TIME

Well they have Dissociative Identity Disorder so this is gonna take a lot of typing, also they represent Yin Yang.

The one who represents Yin-
Name- Xiao
Age: 17
Gender: Female
Sexual Orientation: Asexual
Romantic Orientation: Aromatic
Personality: Introvert, Depressing, Negative, Hateful, Weak(physical attacking), Strong(mental atracking), Smart, Submissive, Despairing
Leader or Follower: Follower
Preferred Weapon: Magic
Likes: Pretty much nothing
Facts: The Yin Yang signs around her are connected to her body and when you hit one of them she get's hurt, and they shoot magic.

The one who represents Yang
Name- Zhou
Age: 17
Gender: Female
Sexual Orientation: Pansexual
Personality: Extrovert, Optimistic, Happy, Encouraging, Strong(physical attacking), weak(mental attacking), Stubborn, Aggressive, Hopeful
Leader or Follower: Leader
Preferred weapons: Any sword
Likes: Pretty much everything
Facts: (Same as Xiao)

This took a while... So yeah. And yes you may use them. Just credit me and all that stuff.