Revision - scarlet tail - Roco Kingdom: World Wiki

Overview

Scarlet Tail (火红尾) is a Fire-type spirit in Roco Kingdom: World released as part of a launch-day collaboration with Shanghai Animation Film Studio (上美影). The spirit is designed in a traditional Chinese ink-painting style to mark the Year of the Horse, and it evolves into Yadan Mane (雅丹鬃), a water-ink styled horse with three visual forms (normal, shiny, prismatic).

Dex

Property	Value
Dex Number	#340
Type	Fire
Collaboration	Shanghai Animation Film Studio (上美影)
Theme	Year of the Horse ink-painting style
Launch date	March 26, 2026 (game launch)

Base Stats (火红尾)

Stat	Value
HP	67
Physical Attack	56
Magic Attack	129
Physical Defense	70
Magic Defense	89
Speed	100
Total	511

Species Ability: Heaven-Earth Brightness

Heaven-Earth Brightness (天通地明) increases Scarlet Tail's skill power by +100% when attacking a target with the Pollution (污染) bloodline. Because most Season 1 Nightmare Shackles encounters produce Pollution Bloodline variants, this ability turns Scarlet Tail into an efficient PvE shiny farming carry.

Evolution Chain

Name	Chinese	Stage
Scarlet Tail	火红尾	Base form (#340)
Yadan Mane	雅丹鬃	Final form (#341)

Yadan Mane evolves from Scarlet Tail. Reports of the exact evolution level vary between Level 36 and Level 40 depending on source, with some pointing at an additional item requirement (Fire-Red Tail Fruit and 1,200 Starlight points). Confirm the exact trigger from the in-game dex before committing evolution materials.

Yadan Mane Forms

Yadan Mane is a water-ink styled horse with three distinct visual forms: the standard form, a shiny variant, and a prismatic variant. Each shares the same underlying stats and skill pool but carries a different visual palette. The prismatic variant is the rarest of the three and is tied to high-end completion rewards.

Acquisition

Launch-day event: Scarlet Tail was distributed during the launch event window and remains obtainable through the collaboration quest line.
Fire bloodline farming: Wild Fire-type spirits in the Vesuvius Volcano region can drop materials used for the evolution.
Shiny and prismatic variants: Drop through extended event participation; rates are not publicly documented.

Role

Anti-Pollution carry: Primary use case is farming Nightmare Shackles Pollution Bloodline spirits, where Heaven-Earth Brightness doubles every damage turn.
Fire-type specialist: High 129 Magic Attack and 100 Speed make Scarlet Tail a competitive special Fire attacker against non-Pollution targets as well.
Collab flavor: Useful as a thematic team piece for players running a horse-themed lineup or participating in the collaboration quest content.

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