Soon-bok, or Sunny as she's known to her friends, had very limited opportunities in her home city of Ch'ongjin. She left school when expected, and joined the mining company just as her brothers had before her. She worked hard, earned little money, and tried not to overburden her parents. When the Elementals arrived at the company one day, Soon-bok didn't realise her life was about to change.

Fire was suddenly exploding from the ground, as bombs were detonated and the very air itself seemed to have become vindictive and malicious, ripping and tearing at everyone. The mines were blocked and flooded, hundreds of men killed; and the support networks above were set upon with equal vengeance.

When the roof of her office collapsed, Soon-bok thought she would die, but instead she seemed to grow. Her skin turned to stone and nothing seemed to hurt her anymore. The fire which ravaged the building was nothing to her, and she tossed aside the debris as she made her way to the light outside.

Disorientated, she looked for someone to ask for directions.

There was no one left. The entire company had been razed, and all that remained were three women. The one called Morningstar approached and explained that Soon-bok had been a victim of greed and man's obsession with raping the earth. She diverted attention away from the destruction wrought by the Elementals and more towards the continued destruction of man. Soon-bok had lost two brothers to the company years earlier and knew that the company hardly cared beyond tokenism. Her family had been hurt, had been abused and exploited for years.

Looking at her hands which were now almost as hard as diamond, Soon-bok realised that she no longer needed to work for minimal wages. Morningstar offered her a grander vision of the world, where people and nature could co-exist in harmony, where no one would go hungry or be forced to live someone else's dream. The honeyed words convinced the young Korean to leave her home and join the Elementals in their quest for vengeance and an ideal world which seemed further away for each passing day.

Soon-bok is still a daughter of the communist ideals, and holds most Western societies with suspicion and contempt. She does not crave money or wealth, but equality. She tends to wreak vengeance upon the bosses of the conglomerates they attack, taking time to crush them and their precious material wealth.

While being physically strong and capable of great violence, Soon-bok is actually quite shy and almost timid. She enjoys being a part of the Elementals, but is not as free in expressing her ideas or dreams as the other three.

“Money will not save you now.”

Diamond Crusader is now permanently composed of a diamond-like substance, essentially making her an organic rock being. She is incredibly heavy and powerful, able to lift in excess of 25 tons. While her super strength is not as great as some other uberhumans, her resistance to injury is almost unparalleled. In addition to her strength and durability, Diamond Crusader also possesses the ability to project intense heat from her eyes, which provides her with an offensive energy blast as well as infrared vision.

Diamond Crusader is now entirely composed of organic rock, a dark grey material which is smooth and cold to the touch. She is taller than she was before the clash with the Elementals, standing over two metres tall and weighs 220kg. Her hair has turned from black to a metallic white, and she wears a black uniform of shorts and short sleeved crop-top which has a red diamond in the centre. Out of uniform, Soon-bok tries to wear the most unimpressive and modest clothing she can fit into, although it is increasingly difficult to find appropriate attire for someone her size and strength.