Character introduction: 

 

The Agents

The agents are the bridge between the Masterminds and Adversaries. They are, of course, only agents, and their job is to assist where it is found necessary. Nothing more.

Lucas. Wong Yukhei, an orphan with nothing to offer the Agents except his strength and his optimism. 

Jeno. Lee Jeno, an outcast who wandered the world until he was discovered by X, the man behind the Agents and the Adversaries. Has little to offer the Agents as well. 

Chenle. Zhong Chenle, a prince who hated his life and so ran away at a young age. 

Jisung. Park Jisung, the youngest Agent, a normal high school boy. Probably the most important Agent of all. 

Yangyang. Liu Yangyang, the smartest and most aggressive Agent. The only Agent who is physically able to look directly through the Door.

Taeil. Moon Taeil, leader of the Agents. The only one with a direct connection to X. The only agent who has never been to the Door. 

Xiaojun. Xiao Dejun, son of a rich singer. Trusts no one, and no one trusts him. 

 

The Adversaries 

Created by X to stop the Masterminds from reaching the Other World.

Mark. Mark Lee, a seemingly normal young boy who is assigned to steal the Masterminds' key.

Haechan. Lee Donghyuck, a young singer who is the younger cousin of a Mastermind. And they hate each other.

 Yuta. Nakamoto Yuta, a dancer who happens to be the only person on earth who knows what lies beyond the Door. He is a returned soul from the Land of the Dead.

Doyoung. Kim Dongyoung, the only Adversary besides Yuta who can look directly at the Door.

Hendery. Huang Guanheng, the last to join the Adversaries. Has never been to the Door. 

 Kun. Qian Kun, the leader of the Adversaries. Has a ring that comes from the Other World. 

Johnny. John Seo, a college student who has ties to the Queen of the Other World. 

 

The Masterminds. 

The Masterminds are nobody's minions. They truly live up to their name- they cannot be tricked or cheated, because they are the smartest people on earth. 

Ten. Chittaphon Leechaiyakul, cousin to the Adversary Haechan. The only person alive on Earth who can physically touch the Door. 

 Sicheng. Dong Sicheng, quiet and innocent but the smartest of them all. Charged with making the Key. 

Renjun. Huang Renjun, son of a known serial killer who was never caught alive. Permanently damaged from trying to touch the Door. 

Jaemin. Na Jaemin, son of a servant, seemingly innocent and stupid. Don't be fooled. 

Jungwoo. Kim Jungwoo, as sweet and childlike as they come. Has seen a glimpse of the Other World before. 

Taeyong and Jaehyun. Lee Taeyong, Jung Jaehyun. Leaders of the Masterminds; everyone fears them. Scarred and damaged but still struggling on to their goal, to everyone's goal; they can, they must and they will, they will open the door.