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Updated: 2026/11/10 · Star Savior Complete Character Build Guide

[Star Savior] Petra — Recommended Equipment, Party Formations, Rescue Journey Training & Evaluation

Complete strategy guide for Petra in Star Savior. Covers Petra's performance evaluation, recommended equipment sets, 4-unit party formations, Rescue Journey Arcana decks, Limit Break (dupe) reliance, skill upgrade priority, Exclusive Curio, 10-stage Resonance materials, favorite affinity gifts, and Voice Actor (CV) profile.

Petra's Evaluation & PerformanceC

Petra
Petra
Petra
Petra Union
Rarity / Pool
SSR (Standard)
Attribute
Sun Attribute
Class
Ranger
Attack Type
Impact damage
Overall
C
General PvE
C
Vs. Boss
B
Gauntlet PvP
B
Reroll
C
Dupe Priority
★★☆
[Petra Performance Summary]
  • •DEF Down can be given └Firepower also increases with the number of ignition stacks
  • •Attribute compatibility is important because you gain stacks when your allies break.
  • •There is also a speed buff and you can increase the number of actions you take.

Recommended Equipment Sets (PvE & PvP)

Recommended PvE Equipment Sets
Insight Set
Insight Set Set
Crit Rate
Hit the mark Set
Hit the mark Set Set
Effect Hit
Recommended PvP (Gauntlet) Equipment Sets

Recommended Main Stats & Substat Priority

NecklaceNecklace Main Stat
Speed
RingRing Main Stat
Effect Hit
Substat PrioritySpeed / Effect Hit / Attack Power (%) / Crit Rate / Crit DMG

Petra's Rescue Journey Training & Recommended Arcana

Recommended Arcana Deck: Attacker basic formation

[Key Arcana Deck & Rescue Journey Points]
  • •Strength training is a priority, but the defense debuff is powerful, so I want to focus on it so I can always apply it.
  • •It is recommended that Stellar Archive has Power +2 to strengthen its power.
  • •Critical potential, Effect Hit type, and Attack type are recommended.

■Substitute Arcana Cards (Replacement Table)

Recommended Rescue Journey Hard Potential

Recommended Hard PotentialPotential Effect
Starlight Trail DX4Starlight Trail DX4
Increases speed by 12. After using Basic Skill, there is a 25% chance to increase own Action Gauge by 10%. Occurs only once per turn.

Rescue Journey Training Stat Priority Policy

PowerPower
5 / 5
HealthHealth
3 / 5
EnduranceEndurance
3 / 5
FocusFocus
4 / 5
ProtectProtect
0 / 5

Petra's Strengths & How to Use

Increase Action Gauge with Toughness Break

By setting Petra to LB1 (+1) or higher, she can increase her own Action Gauge when an ally other than herself breaks the enemy's Toughness.

Combined with the speed buff of Special Skill, you can increase the number of moves, and it is powerful that you can also aim to reuse the Ultimate Skill, which is the main weapon.

Petra's Limit Break (Dupe) Reliance

Petra Limit Break Priority Rating★★☆

★★☆ (I want it to be Limit Broken, but there are no operational problems with Base (LB0))

Petra's Skill Upgrade Priority & Level Effects

Skill Upgrade Priority & Target Levels

Skill SlotUpgrade PriorityRecommended Level
Basic Skill★☆☆Lv.3
Special Skill★☆☆Lv.3
Ultimate Skill★★★Lv.8

Skill Level Enhancement Effects (Lv.2 – Lv.10)

Basic Attack (Lv.2–10)
2Damage Dealt +1%
3Damage Dealt +1%
4Damage Dealt +1%
5Damage Dealt +1%
6Damage Dealt +2%
7Damage Dealt +2%
8Damage Dealt +2%
9Damage Dealt +2%
10Damage Dealt +3%
Special Skill (Lv.2–10)
2Damage Dealt +1%
3Damage Dealt +1%
4Damage Dealt +1%
5Damage Dealt +1%
6Damage Dealt +2%
7Damage Dealt +2%
8Damage Dealt +2%
9Damage Dealt +2%
10Damage Dealt +3%
Ultimate Skill (Lv.2–10)
2Damage Dealt +1%
3Damage Dealt +2%
4DEF Down occurrence rate increased by 10%
5Damage Dealt +2%
6Cooldown -1 Turn
7Damage Dealt +2%
8DEF Down occurrence rate increased by 15%
9Damage Dealt +3%
10Damage Dealt +5%

Petra's Skills & Nova Burst

Preliminary consideration of architectural design
Unique PassivePreliminary consideration of architectural design
Passive
Passive | Toughness: 1 · Passive Effect

Petra's attack power increases by 15%. After Petra breaks the enemy's Toughness with all allies except for herself, she gives herself one Ignite stack and increases her Action Gauge by 20%. Occurs only once per turn.

Skill Buff / Debuff Definitions
Ignition
Damage dealt to Star Attribute units increased by 1%. Applies to up to 5 stacks. Boost effects are applied independently regardless of strengthening/weakening.
Improvised design
Basic SkillImprovised design
Active Skill | Single Target
Passive | Toughness: 1 · Damage: ATK 65%
Damage:ATK 65%

Petra slams the blueprint and attacks. Grants 1 ignition stack to yourself.

Nova Burst: When attacking, your Fixed Toughness Damage temporarily increases by 1.
Skill Buff / Debuff Definitions
Ignition
Damage dealt to Star Attribute units increased by 1%. Applies to up to 5 stacks. Boost effects are applied independently regardless of strengthening/weakening.
Start of construction
Special SkillStart of construction
Active Skill | Single Target
CT: 3 turns | Toughness: 1 · Damage: ATK 90%
Damage:ATK 90%

Petra takes out a bomb from her side bag and attacks. Causes SPD Up for 2 turns and gives 2 Ignition stacks.

Nova Burst: When attacking, temporarily increases own Fixed Toughness Damage by 2.
Skill Buff / Debuff Definitions
SPD Up
Speed increased by 20%.
Ignition
Damage dealt to Star Attribute units increased by 1%. Applies to up to 5 stacks. Boost effects are applied independently regardless of strengthening/weakening.
Architectural consultation
Ultimate SkillArchitectural consultation
Active Skill | Single Target
CT: 4 turns | Toughness: 1 · Damage: ATK 115%
Damage:ATK 115%

Petra attacks by rolling a large number of bombs. Inflicts DEF Down on the enemy for 2 turns at 100%. When attacking, increases by 4% in proportion to the number of Ignition stacks attached to yourself, up to a maximum of 5 stacks. After attacking, all Ignition stacks are consumed.

Nova Burst: When attacking, your Fixed Toughness Damage temporarily increases by 1.
Skill Buff / Debuff Definitions
DEF Down
Defense power is reduced by 30%.
Ignition
Damage dealt to Star Attribute units increased by 1%. Applies to up to 5 stacks. Boost effects are applied independently regardless of strengthening/weakening.
SPD Up
Speed increased by 20%.

Petra's Combat Stats (Lv.200) & Rescue Journey Capabilities

General Combat Stats & Server Ranking (/ 59 Saviors)

Attack (ATK)27/57
4,223
Max HP37/57
20,662
Defense (DEF)22/57
1,600
Speed (SPD)9/57
104
Crit Rate
5%
Crit DMG
50%
Effect Hit
116%
Effect RES
0%

Rescue Journey Base Aptitudes

Power
150
Health
20
Endurance
20
Focus
235
Protect
10
Exclusive Curio · Rank C(No change to that extent)
Petra Tools Ver.00
Petra Tools Ver.00

When using Improvised Design, own Toughness Damage increases by 2.

Resonance Potentials
Sense of concentration: Effect Hit increases by 10%.
Sense of attack: Attack power increases by 5%.
Concentration skills: Effect Hit increases by 4%.

Petra's Resonance Stages (1–10) & Required Materials

Resonance Stage 1–10 Effects & Material Requirements

StageJourney Stat BonusCombat Stat BonusRequired Materials
Stage 1Focus +45ATK +100 HP +720
Ether DustEther Dust×20
Shape-Memory AlloyShape-Memory Alloy×8
Stage 2Power +30Effect Hit4%
Ether DustEther Dust×20
Shape-Memory AlloyShape-Memory Alloy×16
Stage 3Sense of concentrationATK +125 DEF +50
Ether DustEther Dust×30
Hyperspace circuit IHyperspace circuit I×8
Anti-Gravity Meteorite IAnti-Gravity Meteorite I×4
Stage 4Focus +60ATK 2%
Ether DustEther Dust×30
Hyperspace circuit IHyperspace circuit I×12
Anti-Gravity Meteorite IAnti-Gravity Meteorite I×6
Stage 5Power +40HP +900 DEF +60
Ether DustEther Dust×40
Hyperspace circuit IHyperspace circuit I×16
Anti-Gravity Meteorite IAnti-Gravity Meteorite I×8
Stage 6Sense of attackSPD +4
Ether DustEther Dust×40
Hyperspace circuit IHyperspace circuit I×20
Anti-Gravity Meteorite IAnti-Gravity Meteorite I×10
Stage 7Focus +60ATK +175 HP +1080
Ether DustEther Dust×50
Hyperspace circuit IIHyperspace circuit II×4
Anti-Gravity Meteorite IIAnti-Gravity Meteorite II×2
Stage 8Focus +60ATK 4%
Ether DustEther Dust×50
Hyperspace circuit IIHyperspace circuit II×6
Anti-Gravity Meteorite IIAnti-Gravity Meteorite II×3
Stage 9Power +50ATK +200 DEF +70
Ether DustEther Dust×60
Hyperspace circuit IIHyperspace circuit II×8
Anti-Gravity Meteorite IIAnti-Gravity Meteorite II×4
Stage 10Concentration skillsEffect Hit12%
Ether DustEther Dust×60
Hyperspace circuit IIHyperspace circuit II×10
Anti-Gravity Meteorite IIAnti-Gravity Meteorite II×5

Total Materials Required for Full Resonance (Stages 1–10)

Ether DustEther Dust
×400
Shape-Memory AlloyShape-Memory Alloy
×24
Hyperspace circuit IHyperspace circuit I
×56
Anti-Gravity Meteorite IAnti-Gravity Meteorite I
×28
Hyperspace circuit IIHyperspace circuit II
×28
Anti-Gravity Meteorite IIAnti-Gravity Meteorite II
×14

Petra's Presents & Affinity Gifts

Favorite Gifts (Highest Affinity Bonus)

FavoriteLatest issue of Travel TimesLatest issue of Travel Times
FavoriteInterpretation of time horizonInterpretation of time horizon
FavoritePhantom Thief Fox Luna Hardcover EditionPhantom Thief Fox Luna Hardcover Edition
FavoriteFirst edition of a new eraFirst edition of a new era
FavoriteBook of Void ManuscriptBook of Void Manuscript

Liked Gifts (Bonus Affinity)

LikedSkin care lip balmSkin care lip balm
LikedElegant hand mirrorElegant hand mirror
LikedCelestial All-in-One EssenceCelestial All-in-One Essence
LikedGolden dew moisturizing creamGolden dew moisturizing cream
LikedSerenade LumiereSerenade Lumiere

Petra's Ark Point Illustration

Petra Ark Point

Petra's Voice Actor (CV), How to Obtain & Profile

Voice Actor (CV)Mayu Mineta
AffiliationPetra Union
BirthdayOctober 21st
Height155cm
OriginCallide
How to ObtainStandard Observation
Character LoreRepresentative of the Petra union, which undertakes all construction-related work, from demolition to construction. She has a talent for developing bombs that accurately destroy only their targets.

SSR Characters (51)

SR Characters (8)

Rankings & Tier Lists

Beginner Must-Reads!

Useful Mechanics & System Guides

Complete Static Database

Author of This Strategy Guide

Star Savior Strategy Editorial Team
Star Savior Strategy Editorial Team

Dedicated Star Savior verification & meta research team covering all 59 playable Saviors, 85 Arcana cards, Rescue Journey Hard Mode potentials, Cosmo Gate boss clear lineups, and Gauntlet PvP rankings.

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