Honkai: Star Rail / Character

Serval

Thunder · Erudition · 4★

Honkai: Star Rail hub →

Details Upgrade costs Skills Sources

Stats & requirements

Element: Thunder
Path: Erudition
Rarity: 4

Starting stats (first promotion tier)

HP: 124.8
ATK: 88.8
DEF: 51
SPD: 104
TAUNT: 75
CRIT_RATE: 0.05
CRIT_DMG: 0.5

Named skills

Starting-level values from the cited data. Coefficients describe the skill’s inputs, not final damage.

Roaring ThunderclapBasic ATK / Single Target

Level 1 coefficient 1: 0.5

Lightning FlashSkill / Blast

Level 1 coefficient 1: 0.7
Level 1 coefficient 2: 0.3
Level 1 coefficient 3: 0.8
Level 1 coefficient 4: 2
Level 1 coefficient 5: 0.4

Here Comes the Mechanical FeverUltimate / AoE

Level 1 coefficient 1: 1.08
Level 1 coefficient 2: 2

Galvanic ChordsTalent / Enhance

Level 1 coefficient 1: 0.36

Attack

See the source for this talent’s full effect and conditions.

Good Night, BelobogTechnique

Level 1 coefficient 1: 1
Level 1 coefficient 2: 0.5
Level 1 coefficient 3: 3
Level 1 coefficient 4: 0.5

Upgrade & material costs

Choose a track to see each purchased step and the total material bill. These totals cover the listed steps; character EXP and unlisted costs are separate.

Character promotion0 → 6

Total for the listed steps

Credit246,400

Silvermane Badge12

Silvermane Insignia13

Lightning Crown of the Past Shadow50

Silvermane Medal12

Step by step

Upgrade	Gate	Materials
0 → 1	Lv. 20	Credit × 3,200Silvermane Badge × 4
1 → 2	Lv. 30 / Rank 1	Credit × 6,400Silvermane Badge × 8
2 → 3	Lv. 40 / Rank 2	Credit × 12,800Silvermane Insignia × 5Lightning Crown of the Past Shadow × 2
3 → 4	Lv. 50 / Rank 3	Credit × 32,000Silvermane Insignia × 8Lightning Crown of the Past Shadow × 5
4 → 5	Lv. 60 / Rank 4	Credit × 64,000Silvermane Medal × 5Lightning Crown of the Past Shadow × 15
5 → 6	Lv. 70 / Rank 5	Credit × 128,000Silvermane Medal × 7Lightning Crown of the Past Shadow × 28

Roaring Thunderclap1 → 6

Total for the listed steps

Credit192,000

Key of Inspiration2

Silvermane Badge4

Key of Knowledge6

Silvermane Insignia5

Key of Wisdom8

Silvermane Medal5

Step by step

Upgrade	Gate	Materials
1 → 2		Credit × 4,000Key of Inspiration × 2Silvermane Badge × 4
2 → 3		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2
3 → 4		Credit × 16,000Key of Knowledge × 4Silvermane Insignia × 3
4 → 5		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2
5 → 6		Credit × 128,000Key of Wisdom × 6Silvermane Medal × 3

Lightning Flash1 → 10

Total for the listed steps

Credit522,000

Silvermane Badge6

Key of Inspiration2

Key of Knowledge12

Silvermane Insignia10

Key of Wisdom23

Silvermane Medal5

Guardian's Lament3

Tracks of Destiny1

Step by step

Upgrade	Gate	Materials
1 → 2		Credit × 2,000Silvermane Badge × 2
2 → 3		Credit × 4,000Key of Inspiration × 2Silvermane Badge × 4
3 → 4		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2
4 → 5		Credit × 16,000Key of Knowledge × 4Silvermane Insignia × 3
5 → 6		Credit × 24,000Key of Knowledge × 6Silvermane Insignia × 5
6 → 7		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2
7 → 8		Credit × 64,000Key of Wisdom × 4Guardian's Lament × 1Silvermane Medal × 3
8 → 9		Credit × 128,000Key of Wisdom × 6Guardian's Lament × 1
9 → 10		Credit × 240,000Key of Wisdom × 11Tracks of Destiny × 1Guardian's Lament × 1

Here Comes the Mechanical Fever1 → 10

Total for the listed steps

Credit522,000

Silvermane Badge6

Key of Inspiration2

Key of Knowledge12

Silvermane Insignia10

Key of Wisdom23

Silvermane Medal5

Guardian's Lament3

Tracks of Destiny1

Step by step

Upgrade	Gate	Materials
1 → 2		Credit × 2,000Silvermane Badge × 2
2 → 3		Credit × 4,000Key of Inspiration × 2Silvermane Badge × 4
3 → 4		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2
4 → 5		Credit × 16,000Key of Knowledge × 4Silvermane Insignia × 3
5 → 6		Credit × 24,000Key of Knowledge × 6Silvermane Insignia × 5
6 → 7		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2
7 → 8		Credit × 64,000Key of Wisdom × 4Guardian's Lament × 1Silvermane Medal × 3
8 → 9		Credit × 128,000Key of Wisdom × 6Guardian's Lament × 1
9 → 10		Credit × 240,000Key of Wisdom × 11Tracks of Destiny × 1Guardian's Lament × 1

Galvanic Chords1 → 10

Total for the listed steps

Credit522,000

Silvermane Badge6

Key of Inspiration2

Key of Knowledge12

Silvermane Insignia10

Key of Wisdom23

Silvermane Medal5

Guardian's Lament3

Tracks of Destiny1

Step by step

Upgrade	Gate	Materials
1 → 2		Credit × 2,000Silvermane Badge × 2
2 → 3		Credit × 4,000Key of Inspiration × 2Silvermane Badge × 4
3 → 4		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2
4 → 5		Credit × 16,000Key of Knowledge × 4Silvermane Insignia × 3
5 → 6		Credit × 24,000Key of Knowledge × 6Silvermane Insignia × 5
6 → 7		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2
7 → 8		Credit × 64,000Key of Wisdom × 4Guardian's Lament × 1Silvermane Medal × 3
8 → 9		Credit × 128,000Key of Wisdom × 6Guardian's Lament × 1
9 → 10		Credit × 240,000Key of Wisdom × 11Tracks of Destiny × 1Guardian's Lament × 1

Rock 'n' Roll0 → 1

Total for the listed steps

Credit4,000

Key of Inspiration2

Guardian's Lament1

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 4,000Key of Inspiration × 2Guardian's Lament × 1

String Vibration0 → 1

Total for the listed steps

Credit16,000

Key of Knowledge4

Tracks of Destiny1

Guardian's Lament1

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 16,000Key of Knowledge × 4Tracks of Destiny × 1Guardian's Lament × 1

Mania0 → 1

Total for the listed steps

Credit128,000

Key of Wisdom6

Tracks of Destiny1

Guardian's Lament1

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 128,000Key of Wisdom × 6Tracks of Destiny × 1Guardian's Lament × 1

CRIT Rate Boost0 → 1

Total for the listed steps

Credit2,000

Silvermane Badge2

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 2,000Silvermane Badge × 2

Effect Hit Rate Boost0 → 1

Total for the listed steps

Credit4,000

Key of Inspiration2

Silvermane Badge4

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 4,000Key of Inspiration × 2Silvermane Badge × 4

CRIT Rate Boost0 → 1

Total for the listed steps

Credit8,000

Key of Knowledge2

Silvermane Insignia2

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2

Effect RES Boost0 → 1

Total for the listed steps

Credit8,000

Key of Knowledge2

Silvermane Insignia2

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 8,000Key of Knowledge × 2Silvermane Insignia × 2

CRIT Rate Boost0 → 1

Total for the listed steps

Credit16,000

Key of Knowledge4

Silvermane Insignia3

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 16,000Key of Knowledge × 4Silvermane Insignia × 3

Effect Hit Rate Boost0 → 1

Total for the listed steps

Credit36,000

Key of Wisdom2

Silvermane Medal2

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2

CRIT Rate Boost0 → 1

Total for the listed steps

Credit36,000

Key of Wisdom2

Silvermane Medal2

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 36,000Key of Wisdom × 2Silvermane Medal × 2

Effect RES Boost0 → 1

Total for the listed steps

Credit128,000

Key of Wisdom6

Silvermane Medal6

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 128,000Key of Wisdom × 6Silvermane Medal × 6

Effect Hit Rate Boost0 → 1

Total for the listed steps

Credit128,000

Key of Wisdom6

Silvermane Medal6

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 128,000Key of Wisdom × 6Silvermane Medal × 6

CRIT Rate Boost0 → 1

Total for the listed steps

Credit128,000

Key of Wisdom6

Silvermane Medal6

Step by step

Upgrade	Gate	Materials
0 → 1		Credit × 128,000Key of Wisdom × 6Silvermane Medal × 6

Sources & image credit

Reference snapshot: 24 October 2026.

HoYoverse / COGNOSPHERE

REFERENCE INDEX

All character entries →Read about Honkai: Star Rail →

Honkai: Star Rail

March 7th makes the Astral Express feel like a found family

March 7th turns a crew of travelers into something warmer than a transportation service. Her bright camera, chosen name, and curiosity about a lost past make the Astral Express feel like a home being assembled one shared moment at a time.

Character analysis · 3 min

Honkai: Star Rail

Dan Heng's reserve makes room for the Trailblazer's questions

Dan Heng’s quiet presence on the Astral Express can seem like a refusal to engage. In the early journey, though, his archive work and measured responses make him a steady guide: someone who gives the Trailblazer room to ask without turning every answer into a performance.

Character analysis · 3 min

Honkai: Star Rail

Jarilo-VI builds its conflict above and below ground

Jarilo-VI gives its central divide a physical shape. Belobog’s exposed streets and the Underworld’s constrained spaces make the distance between communities tangible, so the planet’s conflict is encountered through movement and perspective as much as through explanation.

Story analysis · 3 min

Honkai: Star Rail

March 7th, Dan Heng, Natasha: three turns and one Skill Point pool

Skill Points turn a party’s separate turns into a shared planning problem. Understanding when a basic attack can carry the next moment, when a skill deserves the resource, and how ultimates fit around that choice makes ordinary battles easier to read.

Game guide · 4 min

Stats & requirements

Starting stats (first promotion tier)

Named skills

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Sources & image credit

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