D.Va is a former world champion Gamer and became captain of MEKA squad due to her skills and charm. She was enlisted by the South Korean Mikitary to fight Omnics 

Her real name is Hana Song

a young slender woman wearing headgear headphones and a blue and white jumpsuit.

She has Brown hair, brown eyes, Beautiful face, and pink whisker face paint 

Expert Mech handling skills and can use a plasma pistol

Secretly a yandere.

Has a sassy yet cute personality and uses Gamer lingo and acronyms