Before Dok2 came out on the show, the other participants got to see a video hinting at his identity.  Once he entered the studio, he was welcomed greatly by the others.

He said on the show, "I debuted thirteen years ago and I'm the CEO of a hip hop label that I founded at twenty six years old."  As the others on the show looked around at his flashy house through the video of his daily life, they jokingly stated, "This isn't a hotel, right?  It's so cool. It's like being in America.  The house is so big.  This isn't Will Smith's house, is it?"

When asked how he came to live alone at a young age, he stated, "Back in 2002, when I was thirteen years old, our home was in Busan and we had a big restaurant, but it didn't do well so went bankrupt. Our family had to split up, and my older brother and I came to Seoul to do music.  We lived in a container box in the building of our agency for about two years.  Afterwards, the rest of the family all came to Seoul, too, and lived in a small room used by cleaning ahjummas.  That is why I officially lived alone starting in 2011."

He also revealed that back during the time he lived in the container box, he didn't even have 50 cents to spend. For food, he would usually just drink water, eat a raw instant ramen pack, or just go hungry. He explained this is why he buys his nice accessories and luxury cars as he still has this hunger and fantasy from when he was had so little money. 

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Now he's ballin'!  All that hard work and sacrifice paid off!