Choi Siwon was born in an elite, rich wolf family. His father was a respected alpha, everyone knew or heard of Mr. Choi. Siwon was trained to become a strong wolf, despite anything. Yet, he choose another path in his life. As soon as he reached the legal age of 18, the wolf decided to mingle with humans and live a happy life. He opened his own company which bloomed in no time. Tho, his wolf side never disappeared. He promised his late father that he would still be part of the Metsa pack so he became a general. A popular face and a general? Not a bad combination. The pack grew to be his family, family he wished he had as a kid, and now, being older, he feels as if he is responsible for the younger pack members, helping and guiding them while doing his job. He became respected not only in his pack but also in human world, influencing everyone with his mysterious yet dominant personality and character.

Coler inc. also known as Coler is a South Korean multinational technology corporation located in Seoul, South Korea that designs, develops, and sells consumer electronics, computer software, online services and game prototypes. The Coler inc. was founded in December of 2006 by Choi Siwon and ever since then he has been an executive director and owner. The company's hardware products include intertel smartfone, acebook personal computer and whole line of consumer electronics called "equcee". In 2010 the corporation won the award - "company of the year". Valued at almost 11 billion American dollars, Coler inc. became second most valuable corporation in South Korea after Samsung.

Siwon barely transforms into his wolf form, and only when there is a need to do so. His wolf is a massive creature, with well built, masculine body. Color of his fur is pitch black, in the light looking as if it's sparkling, just like a black onyx stone. His eyes are amber red and in the darkness, they glow. He has long, white claws and teeth. In his wolf form, he can speed up to 40 mph and jump up to four meters height and six width..