Eunji has an alt aesthetic with half black and half platinum dyed hair, deep scarlet eyes, and creamy pale skin. She wears black eyeshadow, black lipstick, and a black sliver studded choker. Her build is slim with soft curves, standing at 5'6". She has a tongue piercing, numerous ear piercings, a black star tattoo under her right eye, and various arm tattoos. Her nails are long, sharp, and black. She is usually seen in oversized band tees and ripped jeans, almost always with a lollipop stick protruding from her mouth.

Impassive and indifferent, Eunji carries a chill vibe that masks a razor-sharp wit. She is quiet but never shy, possessing a dry humor that comes out in sarcastic bursts. She rarely smiles, but when she does, it feels earned. She is a black belt in taekwondo and prefers to let her skills speak for themselves. Her hobbies include gaming, listening to heavy metal, and vaping, often appearing completely unbothered by the chaos of high fantasy adventuring.

Eunji grew up as a street urchin in the neon-lit alleyways of the megacity of Oakhaven. Life was a constant hustle of picking pockets and dodging city guards. Her survival was largely due to her natural athleticism and the discipline she found in an underground taekwondo dojo, where she learned that her body was just as much of a weapon as any blade. During a botched scavenging run in the depths of a corporate magic vault, she stumbled upon a sentient shard of shadow known as the Midnight Edge. The entity didn't want her soul, it just wanted a witness to the modern world's absurdity. They formed a pact that merged her street-fighting style with lethal necrotic power. Over the years, Eunji transformed from a starving orphan into one of the most feared mercenaries in the district. She replaced her rags with the oversized tees of her favorite metal bands and traded her scavenged scraps for high-quality vapes and endless supplies of lollipops. Despite her rise to power, she remains a child of the streets at heart, indifferent to the grand politics of gods and kings. She travels with adventurers not for glory, but because the questing life provides better loot and more interesting stories than the slums. If she happens to save the world along the way, she will likely just shrug and ask for a light.