The Dark Knights can attack on their own with their skills.
Empress Cygnus in the future is referred as "Cygnus". She is Lv. 190 and has a HP value of 1,000,000,000 and gives 204,000,000 EXP
Players who want to fight against Cygnus will have to be prepared. Once you enter the boss map, there will be a cooldown on every consumable item you use.
Cygnus can summon her beloved Knights or what I prefer to call "Dark Knights" and they’ll aid her in combat. The Dark Knights can attack on their own with their skills.