Boss encounters gate the highest-value exotic materials. This page tracks the named roster and where each one drops its key item.
Jujutsu Kaisen crossover; drops Gojo Fragments (50 needed for class unlock).
Jujutsu Kaisen crossover; drops Sukuna Fragments (50 needed for class unlock).
Black Clover crossover; drops Asta Fragments (50 needed for class unlock).
DMC crossover; drops Devil Heart with compound 15% spawn x 35% kill rate.
Solo Leveling crossover secret boss; 8% Exotic Shattered Armor, 35% Exotic Ore at wave 30+.
Jujutsu Kaisen crossover; appears in Boss Rush mode.
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Keep rarity, obtain method, abilities, and summary tied to official posts or repeatable in-game testing.
Link bosses entries to matching builds, boss routes, and guide sections.
Keep tier values and obtain methods current after each game update.