There are seven bosses released with the Summer 2025 Update. Access to these bosses is gained through various missions of the new quests, Bloody Tusks and Between the Lines. These bosses include;
Bloody Tusks
Vladrukh- Archfoe, Access is gained during final mission of Bloody Tusks quest. To access this boss you must also have access to vengoth (In service of Yalahar mission 1, Blood Brothers mission 4)
Between The Lines
Inkwing- Archfoe, Access is gained during mission 1 of Between the lines quest
Sir Leonard- Bane, Access is gained upon completing vocation specific mission within the Bookworld. Can be fought every 2 hours.
Sir Leopold- Nemesis, Rare raid spawn boss. Access requires being able to enter the bookworld's Chapter IV.
Blight Mariner- Archfoe, Access is granted upon completing Between the Lines quest. Located in northeastern Venore within a painting.
Tropical Desolator- Archfoe, Access is granted upon completing Between the Lines quest. Located just south of Liberty Bay's depot within a painting in the warehouse.
Wrathful Archivist- Archfoe, Access is granted upon completing Between the Lines quest. Additionally this boss is located just northeast of Yalahar depot in a painting. (Access to Yalahar requires Mission 1 of In Service of Yalahar and explorer society rank: Novice)