Ianthe Cosplay: New Photos and Behind the Scenes Look

A fan-created cosplay of the character Ianthe Tridentarius from the novel Ninth House has gained significant traction on the r/TheNinthHouse subreddit as of July 17, 2026. The project, shared by a community member, has garnered 880 votes and 34 comments from readers of Leigh Bardugo’s dark academia series.

The creator posted the images as a follow-up to a previous set of photos shared several months prior. In the post, the artist noted that the decision to share the new work stemmed from the positive reception of the initial Ianthe cosplay photos.

Ianthe Tridentarius is a central antagonist in Ninth House, serving as a high-ranking member of the arcane societies at Oxford University. The character is defined by her pursuit of power and her distinct, often opulent aesthetic, which serves as the primary blueprint for the fan’s costume design.

The subreddit r/TheNinthHouse serves as a primary hub for fans of the series to share fan art and theories. The high engagement on this specific post reflects a broader trend within the Ninth House fandom, where readers translate the detailed textual descriptions of the “Houses” and their occult hierarchies into visual media.

Because the series has not yet been adapted into a wide-release film or television series with a standardized visual guide, cosplay efforts like those seen in the July 17 post are often used by the community to establish a collective visual interpretation of the characters.