|Voice Actor||N/A (Japanese) , N/A (English)|
Initially he underestimated the party but upon them proving their strength becomes interested.
Some time later, he stops by Neptune's temporary room in Leanbox and invites Neptune and her party to a banquet offered by Lady Green Heart. During the banquet, he approaches IF and wishes to have a personal conversation with her. Outside the Basilicom he told IF that he knew her background and how she is affiliated with the Guild. He then tries to persuade IF to betray Neptune by poisoning her as Neptune is the rival of Lady Green Heart from the console war and, as a reward, giving her full membership of Leanbox. To convince IF, he lets her have an audience with Green Heart herself.
In later events IF, while outside getting food for the group, decides she cannot poison Neptune. However she returns to realize that Yvoire has been one step ahead and already slipped poison into the food. He then proceeds to frame IF for his actions before placing the group under arrest and places them in prison.
After the defeat of the Evangelist/Conversation also known as Arfoire, the party returns to the Basilicom of Leanbox to find Lady Green Heart having a meeting about the situation with Yvorie. When the truth was out of the bag thanks to the party, Green Heart apologizes for shirking her responsibilities.
Yvorie was trying to prove that his actions were for the best interest of Green Heart and Leanbox. It was later revealed that he was instead operating covertly.
Yvoire dresses like the other Basilicom archibishops, with a tall Pope-like hat and carrying a book in his hand.
- A common silhouette is used for other Archbishops in the other Basilicoms.