Void Thunder
2-piece · Electro DMG + 10%.
5-piece · Electro DMG + 15% after releasing Heavy Attack or Resonance Skill. This effect stacks up to 2 times, each stack lasts 15s.
All echoes
Electro
Wuthering Waves · Echoes
Nightmare: Thundering Mephis
Transform into Nightmare: Thundering Mephis and deal Electro DMG to enemies. Equipping this Echo in the main slot grants Electro DMG Bonus and Resonance Liberation DMG Bonus.
ElectroEcho skill
What the echo grants when equipped and used. Values are the game’s own, as filled in for a max-level echo.
Transform into Nightmare: Thundering Mephis and attack enemies in front, dealing 405.00% Electro DMG.
The Resonator with this Echo equipped in their main slot gains 12.00% Electro DMG Bonus and 12.00% Resonance Liberation DMG Bonus.
CD: 25s.
Sonata sets
The sets this echo feeds. Bonuses apply when the team holds enough pieces of the same set.
More echoes
Continuing through the catalogue in order (browsing, not recommendations).
Nightmare: Tempest Mephis
Electro
Nightmare: Crownless
Electro
Nightmare: Inferno Rider
Electro
Nightmare: Mourning Aix
Electro
Phantom: Sentry Construct
Electro
Phantom: Nightmare Crownless
Electro
Game data updated Oct 25, 2026