Mirumo Tsukiyama

Croque Monsieur is an extremely wealthy Ghoul, and a participant at the Auction. He is known as an extravagant Ghoul, and well-known in Ghoul society.

Appearance
He is an elegant older man, with a well-groomed moustache and small-rimmed glasses. He wears gaudy but finely-tailored clothing.

The Auction
He first appears at the auction, competing fiercely with Big Madam for a famous actor. He wins their competition, and offers an apology to her for having won. Ayato Kirishima seems familiar with him, offering an explanation when asked about the winning bidder.

When Tooru Mutsuki is placed up for auction, he takes part in the bidding war against Big Madam and Kanae von Rosewald. Ultimately, he drops out of the competition prior to the final bid.

Trivia

 * His namesake is actually a French grilled ham-and-cheese [sandwich].