Honkai: Star Rail

Firefly: Character promotion materials & levels

Firefly has these reference forms: Firefly (Fire · Destruction). Choose a form, then current and target promotion stages to see the direct material totals and unmodified level values.

Promotion costs exclude leveling XP, trace upgrades, Light Cones and relics. Stats use promotion base + growth × (level − 1) within the selected stage’s level range. Enter the selected form’s actual current progress; the planner compares one form at a time and never adds alternative-form tables together.

Using this reference

Choose the form of Firefly before selecting promotion and level. The allowed level range follows the target promotion, so changing the target may also move the displayed level. Materials cover the promotions between current and target; the stat projection describes the selected target and level.

Compare two forms at matching settings to avoid mixing promotion gains with a form difference. The listed materials and base stats do not include the rest of a build, such as equipment or additional progression systems.

Plan your scenario

Result

HP
814.968
Attack
523.908
Defense
776.16
Speed
104

Materials

  • Credit× 308000
  • Tatters of Thought× 15
  • Fragments of Impression× 15
  • Raging Heart× 65
  • Shards of Desires× 15

Formula

materials = sum(stages[current … target − 1]); stat = promotion base + step × (level − 1)

Firefly · Fire · Destruction

Materials

  1. Stage 1

    Credit × 4000 + Tatters of Thought × 5

  2. Stage 2

    Credit × 8000 + Tatters of Thought × 10

  3. Stage 3

    Credit × 16000 + Fragments of Impression × 6 + Raging Heart × 3

  4. Stage 4

    Credit × 40000 + Fragments of Impression × 9 + Raging Heart × 7

  5. Stage 5

    Credit × 80000 + Shards of Desires × 6 + Raging Heart × 20

  6. Stage 6

    Credit × 160000 + Shards of Desires × 9 + Raging Heart × 35

Item, ability and equipment names without a local source label remain English source identifiers.

Related entries

Honkai: Star Rail →

Sources and version

Honkai: Star Rail · Source facts ↗

StarRailRes · dbe8cdfc

Snapshot reviewed · 2026-11-03

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