If you’ve been exploring New Eridu lately and spotted a familiar orange Bangboo lurking near the video store — no, you’re not hallucinating. Pom-Pom, the beloved Astral Express conductor from Honkai: Star Rail, is already in Zenless Zone Zero, and HoYoverse has officially confirmed what this means: a full ZZZ × Honkai: Star Rail crossover is coming in Winter 2026.
ZZZ × Honkai Star Rail Crossover Confirmed
During the Zenless Zone Zero Version 3.1 “The Long Goodbye” Special Program on 17 July 2026, HoYoverse officially announced that a crossover between ZZZ and Honkai: Star Rail is in the works. The reveal was framed with typical HoYo humour: the official ZZZ X account posted that, after a “technical evaluation,” developers were “temporarily unable to fix the bug where Pom-Pomboo suddenly appeared on Sixth Street” — and so, to celebrate the little visitor, the collaboration was confirmed instead.
The crossover is officially scheduled for Winter 2026, which most fans expect to fall somewhere between December 2026 and early 2027. No specific in-game patch date has been announced yet. Detailed content reveals will come through official HoYoverse channels as the collaboration draws closer.
Where to Find Pom-Pomboo in New Eridu Right Now
The in-game teaser is already live. If you log into ZZZ now, you can track down Pom-Pom — disguised as a mysterious Bangboo called “Pom-Pomboo” — at three locations on Sixth Street in New Eridu:
- Random Play Video Store — near the videotape display, browsing for a book titled Pom-Pom’s Bizarre Adventure
- Club 404
- Gadget Store
The character has unique voicelines at each spot — well worth checking out if you’re an HSR fan who’s made the leap to ZZZ (or vice versa).
Which Characters Might Cross Over? (Leaks — Not Confirmed)
HoYoverse has not officially revealed which characters will appear in the crossover. Leaks circulating in the community suggest the following, though none of this is confirmed — treat it as speculation until HoYoverse says otherwise:
- Robin (HSR) may join ZZZ’s Agent roster
- Astra Yao and Ellen Jo (from ZZZ) may become playable in Honkai: Star Rail, reportedly tied to HSR patch 4.7
Whether the cross-over characters will be fully playable Agents/characters or limited cameos also hasn’t been confirmed. Full details to be confirmed by HoYoverse ahead of the Winter window.
What This Means for Singapore’s HoYo Community
Both Zenless Zone Zero and Honkai: Star Rail have enormous player bases in Singapore, and a crossover between the two is likely to be the kind of event that brings lapsed players back to both games simultaneously. ZZZ itself only launched on Steam in June with Version 3.0, so there’s a whole new PC audience ready for its first major HoYo cross-game event.
Timing-wise, if the Winter 2026 window lines up with the holiday season, it could overlap nicely with the end-of-year school break — a peak gaming period for Singapore players. Local fans heading to HoYo FEST 2026 at Suntec (31 July – 2 August) might even get a first look at crossover merchandise or teaser artwork at the booth.
In the meantime, ZZZ Version 3.1 “The Long Goodbye” itself launches on 29 July 2026, bringing new S-Rank Agents Remielle Dan and Sigrid de L’Azur alongside second-anniversary rewards. Plenty to do while waiting for Winter.