Kim Seung Soo who play North Korean agent in IRIS will join Athena cast. Although Athena is IRIS spin-off, not the sequel, Kim Seung Soo will still portray his old character, the North Korean agent Park Chul Yung.
Meanwhile, other IRIS North Korean agent, Kim So Yeon is also rumored to join Athena cast but she declined the rumor. We thought that Kim So Yeon will not join Athena because Kim So Yeon is confirmed female lead for upcoming SBS drama “Dr Champ” scheduled to air next October.
Source : media paran