Greetings, Rover! Welcome to the ultimate build guide for Rebecca, the featured 5-star Cyberpunk: Edgerunners collab Resonator debuting in Wuwa Version 3.4. Today, we'll break down everything you need to know to maximize her potential, covering her Kit, Materials, Weapons, Echoes, and Team Compositions. Let's dive in!

Character Overview | ||
Rebecca | Rarity | 5★ |
Element | Electro | |
Weapon Type | Pistol | |
Combat Role | Sub DPS | |

Rebecca is a 5-star Electro Resonator who wields a Pistol. Her combat style centers on high-speed gunfire and stance-switching mechanics. By accumulating Fervor points, she cycles between Hunter Mode and Iron Guts Mode to maintain constant pressure.
Activating her Resonance Skill allows her to seamlessly switch between rapid, mobile strikes and heavy, burst-damage blasts. When her Resonance Liberation is unleashed, Rebecca mounts a heavy machine gun, locking onto targets and obliterating them with an unhinged barrage of Electro DMG.
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Rebecca is an Electro Resonator whose kit revolves around managing Fervor points to trigger high-damage stance shifts. Her Normal Attack chain builds energy, while her Resonance Skill allows her to seamlessly switch between Hunter Mode and Iron Guts Mode.
While in Iron Guts Mode, her attacks consume Fervor to deal massive Electro DMG. Her Resonance Liberation summons her iconic heavy machine gun, entering a special burst state that unloads a relentless barrage on targets. Finally, her Outro Skill triggers a Coordinated Attack that shreds enemy Electro Resistance, making her an incredible asset for Electro-focused team compositions.
Shell Credit × 4460260 |
Premium Resonance Potion × 122 |
Premium Energy Core × 135 |
Reverb Combustor × 87 |
Remnant Combustor × 61 |
Aftertune Combustor × 36 |
New Boss Materials × 46 |
We Who Question × 26 |
Forget-Me-Not × 60 |
LF Mech Core × 29 |
MF Mech Core × 40 |
HF Mech Core × 52 |
Mech Core × 61 | / |
Signature Weapon - Bonebreaker
Bonebreaker | Rarity | ⭐⭐⭐⭐⭐ |
Base ATK | 500 | |
CRIT DMG | 72% | |
Increases ATK by 12%/15%/18%/21%/24%. Casting Intro Skill increases the wielder's Basic Attack DMG Bonus by 24%/30%/36%/42%/48% for 14s. Inflicting Hack - Shifting increases the wielder's Basic Attack DMG Bonus by 12%/15%/18%/21%/24% for 14s. The ATK of all Resonators in the team is increased by 30s. | ||
Spectrum Blaster | Rarity | ⭐⭐⭐⭐⭐ |
Base ATK | 587 | |
CRIT Rate | 24.3% | |
Increases ATK by 12%. Casting Intro Skill or hitting the target with Basic Attack increases the wielder's Basic Attack DMG by 36% for 4s. Each time the wielder inflicts Tune Rupture - Shifting or Tune Strain - Shifting during Basic Attacks, all DMG dealt by Resonators in the team is increased by 8% for 30s, up to 3 stacks. Effects of the same name cannot be stacked. | ||
Static Mist | Rarity | ⭐⭐⭐⭐⭐ |
Base ATK | 587 | |
CRIT Rate | 24.3% | |
ATK is increased by 12%. Inflicting Aero Erosion on the target gives 24% Aero DMG Bonus for 10s. Hitting targets with Aero Erosion reduces their Aero RES by 10% for 20s. Effects of the same name cannot be stacked. | ||
Solar Flame | Rarity | ⭐⭐⭐⭐ |
Base ATK | 412 | |
CRIT Rate | 20.3% | |
Dealing Basic Attack or Heavy Attack DMG increases ATK by 2.2% and grants 2.2% Heavy Attack DMG Bonus for 7s, stacking up to 4 times. This effect can be triggered 1 time every 1s. | ||
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Main Slot | |
Shadow of Shattered Dreams (1 Set) | When the character inflict Hack - Shifting ontargets, their Crit Rate is increased by 35%, and Basic AttackDMG Bonus and Heavy Attack DMG Bonus are increasedby 35% for 15s. |
Sonata Effect | |
Void Thunder (2 Set) | Electro DMG +10%. |
Lingering Tunes / Reel of Spliced Memories (2 Set) | ATK increases by 10%. |
Main Stat | |
COST 4 | Crit DMG / Crit Rate |
COST 3 | Electro DMG Bonus / ATK |
COST 3 | Electro DMG Bonus / ATK |
COST 1 | ATK |
COST 1 | ATK |
Sub Stat | |
Crit DMG / Crit Rate > ATK% > Basic Attack DMG Bonus | |
Top Recommendation
Team 1 | ||
Lucy |
Rebecca |
Mornye |
Mornye's Resonance Liberation creates a field providing massive Interruption Resistance, allowing Rebecca to safely stack her Forte Circuit. Furthermore, Mornye's Outro Skill perfectly buffs the Coordinated Attack DMG triggered by the shared Adam Smasher Echoes. | ||
Heavy Attack Team
Team 2 | ||
Augusta/Jiyan |
Rebecca |
Shorekeeper/Verina |
Rebecca features heavy use of Heavy Attack scaling and acts as an independent unit. If you run a high-ceiling Heavy Attack Main DPS who doesn't require dedicated supports (like Augusta or Jiyan), Rebecca fits perfectly as a quick-swap or dual-core Sub-DPS. | ||
Rebecca Main DPS Team
Team 3 | ||
Rebecca |
Sanhua |
Shorekeeper/Verina |
If you run Rebecca as a pure Hypercarry, her core mechanics rely heavily on Basic Attack DMG Bonus. Pairing her with Linette provides powerful buffing capabilities, while the 4-star staple Sanhua can perfectly maximize Rebecca's damage through her Outro Skill, which grants a massive 38% Basic Attack DMG Amplified. | ||
Rebecca excels as a premier Sub-DPS, offering incredible synergy with Lucy right out of the box. She delivers a fully functional and solid combat experience at S0, meaning you don't need to invest in her sequences or signature weapon for her to shine. Since she's completely free, adding her to your team is a pure, zero-cost win.
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game writer
I focus on crafting guides, tips, and strategy content that truly resonates with players. Being deeply invested in Genshin Impact and Honkai: Star Rail, I love exploring every new map and character kit. I take my firsthand experience from the latest updates and turn it into simple, actionable advice to help fellow players navigate Teyvat and the Cosmos with ease.