Dark Ratatan

The official 11 December 2025 announcement describes Dark Ratatan as opponents who command Dark Cobuns through musical cues, mirroring the player’s command style. Their events are central to the narrative, not just unrelated optional bosses. The announcement planned Episode 2 after World 5, challenging fights rewarding Mythic-tier gear, and a gradual rollout of opponents.

That announcement also proposed Duo Ratakaruta, limited to one Duo per run rather than one card of any type, a Goddess Gacha for recycling surplus items, lobby improvements, and Legendary accessories with Decorune effects. These were historical plans, not proof that every feature shipped on 11 December itself.

The v1.1.9 notes, 14 October 2026 confirm the final four fights: Shellshock (turtle), Panda Monium (panda), The Bamboozler (bamboo shoot), and Tangletung (chameleon). They appear as bosses from Episode 3 onward through story events. All eight Dark Ratatan are now included; the old staged-rollout description is no longer the current availability status.

Clear Episode 2 for Episode 3, then Episode 3 for Episode 4. World 6 is reached under the later-episode progression conditions, and Episode 4 has the story’s final boss. The notes do not publish complete individual move sets or the numerical encounter requirements. Mythic limit-break progression is covered in weapons; regular world bosses are in the boss guide.

The 16 October developer notice confirms that Bonboya Gate can show melodies collected before the needed Dark Ratatan encounters are completed, preventing Episode 3 progression. It also acknowledges that later Dark Ratatan fights take too long and says adjustments are planned. No released fix or numerical balance change is claimed here.

The historical official trailer is Descent of the Dark Ratatan, linked directly from the December announcement. A complete origin story connecting these opponents to the eye has not been verified; see the official story premise instead of treating fan theories as canon.