Asterius Fusion Calculator - Persona 5 Royal

Forward fusion

Fusion from Asterius

Use forward fusion when Asterius is already in your compendium and you want to know what it can become. This is especially helpful when building chains toward late-game Persona such as Lucifer, Michael, Satanael, Seth, or Trumpeter.

The Asterius fusion calculator is useful in both directions. Reverse fusion tells you how to create Asterius. Forward fusion tells you whether Asterius can become a stronger Persona, a special-fusion ingredient, or a stepping stone toward a skill route. Use both tables before spending compendium yen.

Skills and itemization

Asterius skills and itemization

Skill levels marked 0 are available at base level. Itemization can differ during a Fusion Alarm, so check both the normal item and alarm item before sacrificing a Persona.

Route notes

How to plan a Asterius fusion

Asterius is a level 56 Fortune Persona with Almighty inheritance and the Frenzied Bull trait. Those facts are more useful together than in isolation: inheritance limits which skills can travel into the result, while the trait can decide whether a recipe fits a damage, support, or defensive build.

For a standard fusion, start with the reverse-fusion table and compare more than one valid pair. A slightly more expensive recipe can be better when it reuses a registered Persona, preserves a desired skill source, or avoids a DLC-dependent result.

Asterius is flagged as DLC-sensitive in the local data. Match the calculator's DLC selections to the save file before treating a missing or unexpected recipe as an error.

Recipe planning

Asterius fusion calculator planning guide

The Asterius fusion calculator is designed for players who want a specific Persona rather than a broad Arcana result. Start with the reverse fusion table when your goal is to make Asterius as directly as possible. Sort mentally by cost, ingredient availability, and whether either ingredient already exists in your compendium. The cheapest listed recipe is not always the best recipe if another pair saves time or carries better skills.

The Asterius fusion calculator also helps when a recipe result looks wrong in-game. If Asterius is not appearing, check whether your DLC settings match your save file. DLC Persona can change the next valid result inside an Arcana range. If a Treasure Demon appears in the recipe, remember that rare fusion can depend on the other Persona's current rank or level position.

If Asterius is marked as special fusion, the Asterius fusion calculator should be read differently. Special Persona do not come from normal two-Persona Arcana math. They require fixed ingredients, and those ingredients may need their own routes. Open each ingredient page, build the chain backward, then return to Asterius when all required pieces are ready.

If Asterius is part of a larger build, use this page beside the Persona 5 Royal Skill List. A recipe that creates Asterius may not carry the passive, attack, healing skill, or support skill you want. Search the skill first, identify possible source Persona, then compare whether those sources can connect into a Asterius fusion route.

If you plan to itemize Asterius, check the itemization section before following a long route. Some Persona have a normal item and a separate Fusion Alarm item. The Asterius fusion calculator gives the recipe context, while the Fusion Alarm page helps decide whether the item result is worth the cost of creating Asterius.