The easter egg of 《superpowers》 appears at 43 minutes and 37 seconds in episode 20 (the finale).
The easter egg mainly tells two things, namely: the person who replaced Deputy Chief Min and Frank's situation.
1. After Deputy Minister Min was assassinated by Kim Doo-sik, the person who replaced Deputy Minister Min was Ma Sangjiu, who was the commander of the massacre when Lee Mi-hyun first appeared, and the person who later called “Vulture” on the intercom.He was also the captain of the operation to capture Jin Douzhi orchard.
2. Frank was different from what was expected. He did not die, but returned to the United States in front of his mother's Las Vegas club. He was probably going to ask his mother why she didn't protect him back then. It felt like he wanted to leave the organization.Because the United States does not know that he is still alive, the United States will send Elias's superpower next.