Zenless Zone Zero characters Ellen Joe and Astra Yao are confirmed for the Honkai: Star Rail Version 4.8 collab. Official drip marketing has locked in their roles: Ellen Joe as a 5-star Ice Destruction unit and Astra Yao as a 5-star Quantum Harmony unit. Full skill descriptions, multipliers, Eidolons, and Light Cones have not leaked in detail yet, so current information relies on their established ZZZ kits and community expectations for turn-based adaptation.

Honkai Star Rail X Zenless Zone Zero Collab Begins

Ellen Joe arrives as an Ice Destruction main DPS. In Zenless Zone Zero she is known for high-mobility scissor attacks, Arctic Ambush dashes, and a Flash Freeze charge system that powers up her basic attacks. Her HSR version is expected to translate this into an on-field Ice carry who mixes single-target and blast damage.

  • Players anticipate a charge or resource system similar to Flash Freeze, where normal attacks or skills build stacks that enable enhanced strikes or a stronger Ultimate window.
  • As a Destruction unit she should handle both boss fights and multi-enemy waves, with potential Action Advance or speed boosts tied to defeats or specific attacks.
  • Her kit is projected to emphasize high Crit damage bursts and Ice-focused damage rather than pure follow-up or DoT play.

These traits position her as a direct Ice DPS option that competes for team slots with existing Ice carries.

Astra Yao is confirmed as Quantum Harmony support. In Zenless Zone Zero she is a top-tier Ether Support who enters an Idyllic Cadenza singing state that raises team DMG and CRIT DMG, grants ATK based on her own ATK during assists and switches, and provides healing on her Ultimate while remaining largely off-field.

  • Her HSR kit is widely expected to deliver broad team buffs to DMG and CRIT DMG, possibly with Action Advance or Energy regeneration to raise team tempo.
  • The singing or performance state from ZZZ is likely to become an off-field or low-field-time mechanic that continues to amplify the squad after she acts.
  • Quantum element opens easy synergy with mono-Quantum teams, while her support profile should fit both hypercarry and dual-DPS setups.

Both characters form the HSR side of the two-way collab (ZZZ receives Kafka and Robin in Version 3.4). Version 4.8 is projected for late December 2026, with Ellen expected in Phase 1 and Astra Yao in Phase 2, though exact banners and any free rewards remain unconfirmed. Full kits are still subject to change once beta data appears.