Peniel, the 2nd in command of the Knights. Sungjae, the friend/lover of Peniel. The Knights, a group of boys that protect the school aka the school gang. The Princesses, the name for the loved ones of the Knights by other gangs. Sehun, the head of Assassins, the international school's gang. His one goal...take everything from Peniel. His main target, Sungjae. His tactics, everything. Dongwoo code name CNU, the shadow knight. His main goal, protect the Princesses and Princes (loved ones of the Assassins). His main targets, Kyungsoo, Sungjae, Mark, the lady in white, Leo, and the mysterious lover of Sehun. His tactics, everything. V, the shadow. No one knows his name only the letter he leaves after a battle. Always on neutral grounds. Never picks sides. 

Main ships: Peniel

Others (very long list): LeNU, Markson, Vkook, Kaisoo, Hunhan, Ailee and Onew, Henry and Amber, Jongkey, and others