Knight of the Eight-Fold Seal only appears during certain events and may not be currently found in game.
The Knight of the Eight-Fold Seal is a Fever spider found in the Spider Courtroom in the Spider Realm during the 2009 Hallowe'en event. He/she is a member of the Spider Court. Based on the title that the spider has, it is assumed that Knight of the Eight-Fold Seal is a high level member of spider society. Despite being an NPC, the Knight of the Eight-Fold Seal can't be talked to.
Trivia[]
The name "Knight of the Eight-Fold Seal" might be reference to the rumour that it is impossible to fold an A4 piece of paper in half more than 8 times.