Alpha Rookey is a Dark element boss in the Russet Highlands. Here's where to find it, why Wind element Aniimo are the best pick, the attacks we saw including the flattened state, and how to catch it.
Where to Find Alpha Rookey
Alpha Rookey is found in the Russet Highlands. It respawns 20 seconds after being cleared, and there are no prerequisites to fight it: head to its location and the battle begins.

The map panel shows a respawn interval of 20 seconds for Alpha Rookey.
Alpha Rookey Weaknesses
Alpha Rookey is a Dark element Aniimo, so Light and Wind element attacks are Super Effective against it. Wind element Aniimo are the best choice: their attacks are Super Effective, and they also resist Alpha Rookey's own Dark attacks. The map panel agrees, listing Wind and Light as Highly Recommended and Rock as Not Recommended.
| Attack element | Against Alpha Rookey |
|---|---|
| Wind | Super Effective against Alpha Rookey, and Dark attacks are Not Effective against Wind. The best choice. |
| Light | Super Effective against Alpha Rookey, but Dark attacks are also Super Effective against Light, so it is both a strength and a weakness. |
| Rock | Not Effective against Alpha Rookey. |

As a defender, the Dark element takes Super Effective damage from Light and Wind.
Alpha Rookey Moves and Attacks
These are the attacks we saw Alpha Rookey use. The attack names are our own labels, not names shown in the game.
| Move | Details |
|---|---|
| Fist Slam | Alpha Rookey leaps up and slams its enlarged fist into the ground. It covers a wide area, which is marked in red on the ground, and it comes 3 times in a row. |
| Ball Bounce | Alpha Rookey turns into a ball and bounces around to hit you. This also comes 3 times in a row. |

Fist Slam covers a wide area and comes 3 times in a row.

During Ball Bounce, Alpha Rookey rolls up into a ball and bounces around.
Flattened State
When one of Alpha Rookey's attacks hits your Aniimo, it becomes flattened. It takes some time to recover, and while flattened it cannot move or attack.

A flattened Aniimo cannot move or attack until it recovers.
How to Catch Alpha Rookey
After defeating Alpha Rookey, you'll get a chance to catch it. Catching costs 30 Primegy, and your catch rate depends on which Aniipod you use.
| Aniipod | Catch Rate |
|---|---|
| Aniipod (free) | 7.2% |
| Aniipod Track | 14% |
| Aniipod Hyper | 14% |
| Aniipod Mega | 14% |
| Aniipod Ultra | 100% |
| Sparkling Cube | 100% |

Aniipod Ultra and Sparkling Cube both show a 100% catch rate for Alpha Rookey.
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