If You are asking about North Korea , then they played in two world cups in 1966 and in 2010.
Kwak Tae-hwi had played 35 times for South Korea before the 2014 FIFA World Cup.
0 times.
Ki Sung-yueng had played 58 times for South Korea before the 2014 FIFA World Cup.
Ji Dong-won had played 28 times for South Korea before the 2014 FIFA World Cup.
Kim Chang-soo had played 9 times for South Korea before the 2014 FIFA World Cup.
Yun Suk-young had played 4 times for South Korea before the 2014 FIFA World Cup.
Hwang Seok-ho had played 3 times for South Korea before the 2014 FIFA World Cup.
Kim Bo-kyung had played 28 times for South Korea before the 2014 FIFA World Cup.
Ha Dae-sung had played 13 times for South Korea before the 2014 FIFA World Cup.
Son Heung-min had played 25 times for South Korea before the 2014 FIFA World Cup.
Park Chu-young had played 64 times for South Korea before the 2014 FIFA World Cup.