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Assist slot, Alt swap and core skills in Aniimo teams
In Egg Heist and Holo Battle Interlink, slots two to four fire only their core skill. Here is how Alt swap triggers it and which cores earn the slot.

The short version
- Hold Alt and press a party member's hotkey to swap to that Aniimo and cast its core skill in one move.
- An Aniimo in the assist slot can only use its core skill, so its regular skills and ultimate do nothing for you there.
- In Egg Heist, slots two to four cannot fight directly: they come out, cast their core or support skill, and hand control back to your main Aniimo.
- In Holo Battle Interlink you control one main Aniimo; assists do not take damage, cannot use their second skill, and cannot use their ultimate.
- Energy comes from one pool shared by the whole party, so careless skill spam starves the rest of your team.
Most of your team in Aniimo does not fight the way your lead does. In Egg Heist and in Holo Battle Interlink, everyone outside the first slot is an assist, and an assist does one thing: it casts its core skill.
That changes how you build a team. A creature with a weak moveset but a strong core skill is worth a slot. A creature whose best tool is its ultimate is wasted there. The Alt swap shortcut is how you fire those core skills quickly, and knowing which mode allows what saves you from building around abilities you cannot use.
How the assist slot and Alt swap work
The first team slot is for your primary damage dealer. The Aniimo behind it sit in the assist role, and an Aniimo in the assist slot can only use its core skill.
You trigger that skill with the Alt swap shortcut. Hold Alt and press a party member's hotkey, and the game swaps to that Aniimo and casts its core skill. This is how you get value out of support team members whose abilities would otherwise sit idle.
One thing is not settled: the size of a combat team. It is given both as four Aniimo, shown in slots 1 to 4 on the right of the screen, and as three active Aniimo. Either way, the principle is the same. Your lead fights, and the others contribute through their core skills.
Assists in Aniimo Egg Heist
In Egg Heist, the Aniimo in the second to fourth team slots act as support assists. They cannot fight directly. Each one comes out only to use its core or support skill, and then control returns to your main Aniimo.
So the three benched Aniimo are not backup fighters in Egg Heist. They are a set of abilities you call on by switching to them. Pick them for what that single skill does, not for their stats in a straight fight.
Assists in Holo Battle Interlink
Holo Battle Interlink (and Holo Battle Sim) give each player only one main Aniimo on the field. The others can only be summoned as assists, and they do not take damage.
The restrictions are tighter than they first look. Assist Aniimo can only use their core skill, which is marked with a diamond icon. The second to fourth slots cannot use their second skill. Ultimates are also off the table for anyone but your main: only the main Aniimo's ultimate can be used, so an assist such as Somni Wing cannot use its own.
If an Aniimo's value lives in its ultimate, put it in the first slot or leave it out of your Interlink team.
Egg Heist
- Slots 2 to 4 act as support assists that cannot fight directly
- Assists come out only to use their core or support skill
- Control then returns to the main Aniimo
Holo Battle Interlink
- Each player controls only one main Aniimo on the field
- Assists use only their core skill, marked with a diamond icon
- Assists do not take damage
- Only the main Aniimo's ultimate can be used
Core skills that earn an assist slot
Because an assist only ever casts its core skill, that skill is the whole reason to bring it.
Turbo's core skill increases team damage and break efficiency by 15%. Turbo also builds Shrouded in Mist stacks passively while off the field, reaching it after 20 seconds, which suits a creature that spends most of its time on the bench.
Spark Elf's core skill, Inspiration, increases the team's fire damage by 16%. That makes it a natural partner for a fire lead.
Sherro's core skill, Flowing Water Slash, absorbs nearby water to add extra water blade slashes, dealing bonus damage equal to 30% Might.
Gracewing is a healer whose assist skill places healing fields that heal in an area. Smoke Screen is a support skill that covers an area with smoke and blocks targeting through it, which you can use to escape or to catch enemies off guard.
15%
Turbo core skill team boost
Contracts and held items boost the core skill
Since the core skill is what an assist actually does, anything that improves it is worth chasing. A contract enhances the equipped Aniimo's core (origin) skill, as with Hexing.
Held items work alongside this. A held item without a contract still grants its stats but not its skill. Equip one with an activated exclusive contract and it adds the skill by enhancing the Aniimo's core active skill. For an assist, the contract is the part that matters, because stats on a creature that only appears to cast one skill do less than an upgraded skill does.
Energy, loadouts and the wider skill kit
Energy (EP) comes from a single pool shared by the whole party rather than held by each Aniimo. Spamming active skills starves the rest of the roster, so planning your skill rotations and creature swaps is more efficient than firing everything the moment it is ready. That applies to Alt swaps too.
On the main Aniimo, the full kit is still in play. Each Aniimo can equip up to two regular combat skills, which you choose, plus one ultimate attack, giving three active abilities at any given time. Ultimate abilities cost a large amount of ultimate points, which must build up before use. Under Multicast, each instance of skill damage grants one point of casting energy. Unlocked Prismana skills can be taught to the standard form and other family members through the Training menu's Skills section.
You can configure multiple team loadouts and swap between them on the fly, so a separate Egg Heist or Interlink team built around core skills does not cost you your usual setup. Aniimo placed in the explore tab take traversal roles separate from the combat roster and are summoned automatically to climb, swim or fly, so they do not compete for an assist slot either.
Where to start
Build your assist slots around core skills alone. Put your damage dealer first, fill the remaining slots with creatures like Turbo, Spark Elf or Gracewing whose core skill helps the team, chase contracts that enhance those skills, and use Alt plus a hotkey to cast them while keeping an eye on the shared energy pool.
Most of this page was re-checked against the released game on 4 October 2026. The rest has not been re-confirmed since release.