|Vilgo the Immortal|
|Key Item||Dragon Bone|
|Bullet II||Focus Portal|
Vilgo the Immortal (不死なるヴィルゴ Fushinaru Virugo ) is a boss in Knights in the Nightmare.
- On Vienna, His People: "I wonder... Are they all right..."
- "All our pain... This must be put to an end."
- "Some speak of eternal life, but nobody is immortal."
- On Wilmgard, A Hated Tyrant: "King of the Old Castle... I have no pity for you."
- "I cannot die now... That cannot be said for you."
Using key Item:Edit
- "We cannot... die out..."
- On Wilmgard, A Hated Tyrant: "You... You will be the ones who will die out."
Vilgo's Boss theme is named "Immortal Damnation".