Wuthering Waves Rebecca Guide: Materials, Kit & Weapon
2026-05-20
Wuthering Waves is an open world action RPG that combines fast combat with free exploration in a story rich, post apocalyptic setting.
It's official: Rebecca is a 5-star Electro Pistol user joining Wuthering Wavesvia the Cyberpunk: Edgerunners collab! Even better? She’s free for everyone through events. To help you get ready,buffbuff has compiled a complete prefarming checklist covering her Ascension, Forte, and Signature Weapon materials.
Rebecca Core Mechanics Overview
Core Playstyle: Dual Form Switch (Hunter / Iron Guts)
Rebecca can freely switch between two combat forms, each with unique attack patterns and passive bonuses.
Hunter Mode: Focuses on agile shooting; gains Crit DMG Bonus.
Iron Guts Mode: Focuses on heavy suppression; gains Defense Ignore.
1. Normal Attacks
Hunter Mode: Performs up to 3 consecutive shots or holds for continuous fire. Includes mid-air plunging attacks and dodge counters.
Iron Guts Mode: Performs up to 3 melee strikes or consumes Stamina for heavy attacks. Also includes aerial attacks and dodge counters.
2. Tactical Dodge
Allows brief evasion during attacks to deal damage.
Key Mechanic: Successfully evading an attack triggers an enhanced counter-attack (Ratatat! or Boom Boom Boom!), dealing significant Electro DMG and generating Fervor.
3. Resonance Skill - Form Switch
Hunter → Iron Guts: Uses "Time for the Big One!" to rush enemies and switch to Iron Guts for bombardment.
Iron Guts → Hunter: Uses "Catch Me If You Can!" to propel herself into the air using recoil and switch to Hunter for rapid fire.
4. Resonance Liberation - Ultimate "Party Time!"
Switches to [? Heavy Machine Gun] Mode, creating a stasis field.
Auto-Target: The machine gun automatically fires at enemies within the central reticle.
Enhancement: Tapping Normal Attack during the barrage enhances the gun's power (up to 2 stages).
Finisher "Big Fireworks!": Triggers massive AoE Electro DMG when the mode ends or Overload is maxed.
Note: Cannot move during this mode but gains Damage Reduction and Interruption Immunity.
5. Forte Circuit - Resource System
Fervor: Generated via Normal Attacks and Intro Skills. When full, Heavy Attacks are enhanced to Ratatat! (Hunter) or Boom Boom Boom! (Iron Guts), consuming all Fervor for high damage.
Hot Hands: Regenerates over time. When maxed, using specific skills (Intro/Resonance Skills) triggers "Only Kids Make Choices!", granting both form bonuses simultaneously for a short duration.
Hack Break: Certain skills apply Hack Break · Shift. Responds to teammate Harmonic Destruction triggers with Hack Break · Melt Contact.
6. Inherent Skills
Buff Stacking: Gains stackable ATK bonuses when triggering "Only Kids Make Choices!" or Resonance Liberation.
Team Support: Increases nearby teammates' ATK during Resonance Liberation. Lucy receives an additional ATK bonus.
7. Intro & Outro Skills
Intro Skill: Triggers a form-specific entry attack (rapid fire into shotgun for Hunter; ground fire propulsion for Iron Guts) that links into the respective Normal Attack chain.
Outro Skill "Good Partner": Summons a machine gun turret for a duration, dealing Electro DMG.
Rover Bond: The next character deals increased DMG. Hits grant Overlimit stacks, boosting Heavy Attack DMG.
Lucy Synergy: If Lucy is bonded, she instantly gains max stacks. The turret's duration and DMG multiplier are also increased.
Rebecca's Weapon
Bonebreaker
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%s for 14s. The ATK of all Resonators in the team is increased by 30s.
Rebecca Ascension Materials
| Materials | Total | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | 46 |
 | Forget-Me-Not | 60 |
 | LF Mech Core | 4 |
 | MF Mech Core | 12 |
 | HF Mech Core | 12 |
 | FF Mech Core | 4 |
 | Shell Credit | 170,000 |
 | HF Mech Core | 12 |
 | FF Mech Core | 4 |
 | Shell Credit | 170,000 |
Rebecca Ascension Materials Per Level
| Ascension Level | Materials | |
| 20 |  | LF Mech Core × 4 |
 | Shell Credits × 5,000 | |
| 40 |  | Forget-Me-Not |
 | MF Mech Core × 4 | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | |
 | Shell Credits × 10,000 | |
| 50 |  | Forget-Me-Not |
 | MF Mech Core × 8 | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | |
 | Shell Credits × 15,000 | |
| 60 |  | Forget-Me-Not |
 | HF Mech Core × 4 | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | |
 | Shell Credits × 20,000 | |
| 70 |  | Forget-Me-Not |
 | HF Mech Core × 8 | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | |
 | Shell Credits × 40,000 | |
| 80 |  | Forget-Me-Not |
 | FF Mech Core × 4 | |
| Unknown | Nightmare Flashdrive Dropped by Adam Smasher | |
 | Shell Credits × 80,000 | |
Rebecca Forte Materials
| Materials | Total | |
 | We Who Question | 26 |
 | Incomplete Combustor | 25 |
 | Aftertune Combustor | 28 |
 | Remnant Combustor | 55 |
 | Reverb Combustor | 67 |
 | LF Mech Core | 25 |
 | MF Mech Core | 28 |
Rebecca Forte Materials Per Level
| Main Node Level | Forte Materials | |
| 2 |  | Incomplete Combustor × 2 |
 | LF Mech Core × 2 | |
 | Shell Credits × 1,500 | |
| 3 |  | Incomplete Combustor ×3 |
 | LF Mech Core × 3 | |
 | Shell Credits × 2,000 | |
| 4 |  | Aftertune Combustor × 2 |
 | MF Mech Core × 2 | |
 | Shell Credits × 4,500 | |
| 5 |  | Aftertune Combustor × 3 |
 | MF Mech Core × 3 | |
 | Shell Credits × 6,000 | |
| 6 |  | Remnant Combustor × 3 |
 | HF Mech Core × 2 | |
 | Shell Credits × 16,000 | |
| 7 |  | Remnant Combustor × 5 |
 | HF Mech Core × 3 | |
 | We Who Question x1 | |
 | Shell Credits × 30,000 | |
| 8 |  | Reverb Combustor × 2 |
 | FF Mech Core × 2 | |
 | We Who Question x1 | |
 | Shell Credits × 50,000 | |
| 9 |  | Reverb Combustor × 3 |
 | FF Mech Core × 3 | |
 | We Who Question x1 | |
 | Shell Credits × 70,000 | |
| 10 |  | Reverb Combustor × 6 |
 | FF Mech Core × 4 | |
 | We Who Question x1 | |
 | Shell Credits × 100,000 | |
Rebecca Bonus Stats Materials
| Bonus Stats | Forte Materials | |
| Stat Bonus 1 |  | Remnant Combustor × 3 |
 | HF Mech Core × 3 | |
 | Shell Credits × 50,000 | |
| Stat Bonus 2 |  | Reverb Combustor × 3 |
 | FF Mech Core × 3 | |
 | We Who Question x1 | |
 | Shell Credits × 100,000 | |
Rebecca Inherent Skill Materials
| Inherent Skill | Forte Materials | |
| Inherent Skill 1 |  | Aftertune Combustor × 3 |
 | MF Mech Core × 3 | |
 | We Who Question x1 | |
 | Shell Credits × 10,000 | |
| Inherent Skill 2 |  | Remnant Combustor × 3 |
 | HF Mech Core × 3 | |
 | We Who Question x1 | |
 | Shell Credits × 20,000 | |
Conclusion
Don't sleep on Rebecca—as long as you hop in for the event, she's yours. A free 5-star is always a must-build, so why wouldn't you? Start pre-farming her mats now to hit the ground running!
Also, with Version 3.4 dropping new faces like Lucy and Lucilla, you might want to stack those pulls. Use buffbuff for your WuWa top-up to secure a hassle-free top-up experience before the collab banners go live
Wuthering Waves is an open world action RPG that combines fast combat with free exploration in a story rich, post apocalyptic setting.
