This is Topaz, Emerald's twin sister.
Now, for they're bios.

Topaz
Age: Unknown
Born On: July 25
Weapon: Bow and arrow
Special Skills: X-Ray vision and super speed
Personality: The smarter but physically weaker of the two. Smart and cunning but understanding. She criticizes herself sometimes for being a push over but tries to keep a strong face.
Extra: She likes to tease her sister, Emerald because she's older than her by 30 seconds.

Emerald
Age: Unknown
Born On: July 25
Weapon: Sword and Shield
Special Skills: Laser vision and super strength.
Personality: The stronger but denser of them. She is very determined but she can sometimes let her ego blind her decisions.
Extra: She secretly looks up to her sister and is always discreetly seeking her approval and acceptance.