The question Is Sunday playable in Honkai: Star Rail? has sparked endless discussion among fans since the Penacony arc. With evolving lore and character reveals, many wonder if Sunday is just a story NPC or a playable character. Here’s a full breakdown of Sunday’s current status, and whether Trailblazers can expect to recruit him onto the Astral Express roster.
Who Is Sunday?
Story Role in Penacony
Sunday, first introduced in version 1.6 and expanded during Penacony content, is a central character in the Trailblaze Missions A New Venture on the Eighth Dawn. Initially an NPC, Sunday plays a major role in the Charmony Festival story arc and is widely considered one of the more complex and iconic figures tied to Penacony’s themes of dreams and discord
Confirmations That Sunday Is Playable
Official Release & Banner
Sunday was officially launched as a playable 5-star Imaginaryelement character in version 2.7 on December 4, 2024. His debut banner, titled Eyes to the Stars, ran through December 25, 2024. He later returned during the rerun banner Indelible Coterie in July 2025 alongside Tribbie and Sparkle
News & Community Evidence
Multiple sources including official esports.gg and ONEÂ Esports confirmed Sunday is playable starting in version 2.7. Even before the reveal, data miners and community posters cited internal data files and unique animation/emotion graphs that strongly indicated playability, a trait unique to playable characters versus NPCs
Sunday’s Release Timeline
- Announced in version 2.7 (December 4 2024) with full playable status.
- First appeared as an NPC starting in version 1.6.
- Underwent promotional rerun banner in July 2025 (Indelible Coterie)
Gameplay Role and Build Potential
Path & Element
Sunday uses the Imaginary element and follows the Harmony Path. His kit focuses on providing buffs to teammates, energy generation, and skill point neutrality, making him highly effective in hypercarry or Summon-based teams
Team Synergies and Content Uses
Sunday’s skill allows a teammate (and their summon) to take an extra turn, significantly boosting DPS pacing. His ultimate grants crit damage boosts and restores energy. He pairs especially well with characters who rely on summoned units (like Lingsha, Topaz, Jing Yuan) or SP-constrained setups.
Build Tips and Equipment
- Best relic sets: Sacerdos’ Relived Ordeal (for speed & crit damage buff synergy) or Sacerdos + Messenger hybrid builds for faster cycling.
- Optimal Light Cones: A Grounded Ascent, But the Battle Isn’t Over, or Earthly Escapade depending on desired energy or buff output.
- Recommended stats: â¥200% Crit¯DMG and SPD tuned just below main DPS to allow sequencing with minimal SP usage
Why There Was Confusion
NPC Origins and Delayed Announcement
Prior to version 2.7, Sunday appeared as an NPC in key story moments in particular, as a major figure in Penacony missions. His delayed playable reveal meant that some players assumed he would remain storyonly, fueling speculation until the official banner release.
Data Miner Speculation vs. Official Confirmation
Before December 2024, community researchers discovered files in the game code suggesting he would be playable such as playable-character-specific emotion graph assets. While not solid proof, these clues aligned with the eventual official launch closely enough that community confidence grew
Summary
- Yes, Sunday is playable in Honkai: Star Rail.
- His banner released December 4 2024 (version 2.7) and featured him as a 5star Imaginary Harmony Path support character.
- He was previously a story NPC, which contributed to confusion before his playable debut.
- Guides and data mining anticipated his release, confirmed via official sources.
- He excels in SPneutral hypercarry teams, supporting summoned units and providing critical buffs.
If you’ve seen speculation, leaks, or forum rumors rest assured. Sunday is not only playable, but a powerful and strategic support character introduced in version 2.7 and later featured in a rerun banner in mid2025.
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