Zombie Stage vs Alien Stage: Every Difference That Matters

Same characters, same voices, same creator, completely different world. This page lays the two out side by side and sticks to what can be sourced — where a claim is a fandom reading rather than something on screen, it is marked as one.

The one table

| Dimension | Alien Stage | Zombie Stage | | --- | --- | --- | | Who performs | Humans, raised in captivity by providers | Zombies — humans infected in a global outbreak | | Who watches | The Segyein, the alien ruling class | Uninfected humans, paying spectators | | Who runs it | The alien establishment, via Anakt Garden | Criminal organisations working with corrupt police | | Setting | An arena on an alien-ruled world | An underground circus stage | | What losing costs | Death | Dismemberment — the parts are sold | | What winning gets you | Survival, and the next round | Keeping your body, this round | | Round 1 pairing | Mizi vs Sua — My Clematis | Mizi vs Sua — Candy Scar | | Round 1 result | Mizi wins; Sua is killed | Mizi wins by one point; Sua’s arm is cut off | | Length so far | 12 episodes, Sept 2022 – June 2025 | 1 episode, June 2026 | | Cast on screen | Mizi, Sua, Till, Ivan, Hyuna, Luka, Isaac and more | Mizi, Sua, Hyuna, Ivan, Mizi’s mother |

Premise

Alien Stage is a singing tournament run by an alien ruling class, the Segyein, on captive humans. The humans are raised for it — a “provider” is a human who has children and raises them for the Segyein — and the contestants sing in pairs. The loser is killed. Twelve episodes, from September 2022 to June 2025.

Zombie Stage starts from an infection instead. Per the official release copy: an unknown disease engulfed the world, criminal organisations and corrupt police concealed the resulting zombies underground, and built an entertainment industry that “trades their beauty and pain,” performed for crowds of uninfected humans. The loser of a match is dismembered and the parts are sold.

The structural difference that matters is not zombies versus aliens. It is what a loss is. In Alien Stage a loss is an ending — the character is gone, and the series carries the absence. In Zombie Stage the performers are already dead, so a loss cannot end anything. It bills you. Sua loses Round 1 and keeps existing, minus an arm, presumably scheduled for Round 2.

That is a slower, meaner kind of horror, and it is the reason the AU reads as a comment on an industry rather than on a dictatorship.

Round 1, both ways

The AU deliberately re-runs the same fixture.

| | Alien Stage Round 1 | Zombie Stage Round 1 | | --- | --- | --- | | Song | My Clematis (나의 클레마티스) | Candy Scar | | Register | A ballad | A bubblegum idol fanchant | | Margin | Mizi wins | Mizi wins by exactly one point | | Aftermath | Sua is killed — the first contestant the series kills | Sua is laid on a slaughtering table; her arm is cut off and sold, over an acapella Little Bunny | | What separates them | The tournament | The industry, then the outbreak |

The clematis carries across as an object. In Alien Stage it is the flower the Round 1 duet is named for; in Zombie Stage it is the bouquet Sua brings to Mizi at the peak of her idol career, which Mizi smiles at and immediately hands to a staff member. Same flower, opposite function: in one universe it is the vow, in the other it is the moment the friendship dies.

Who exists in each

The cast is not simply copied over. As of July 2026:

• Mizi and Sua exist in both, with full Zombie Stage designs and the Round 1 duel.
• Hyuna and Ivan appear in Zombie Stage Round 1 but have no shown role, no track and no published AU backstory.
• Mizi’s mother appears in Zombie Stage only in flashback, during Mizi’s panic attack.
• Hia (희아), Sua’s older sister, exists only in Zombie Stage. She is blind in her left eye, her status is unknown, and she has not appeared in anything yet. There is no equivalent character in the main series.
• Till, Luka and Isaac have not been shown in Zombie Stage at all and have no design in it.

That last line is worth stating plainly because it gets misreported: there is no Till cameo in Zombie Stage Round 1.

The roles also do not map. In Alien Stage, Hyuna never fights a round — she is a former idol who leads the Rebellion and attacks the tournament from outside. Ivan wins Round 3 and then deliberately throws Round 6 so Till survives. Isaac is a Rebellion member, not a contestant at all. None of that carries into Zombie Stage, where the only documented roles so far are Mizi’s and Sua’s.

Colour and design

Character colours are stable across the series — Mizi’s rose #f472b6, Sua’s pale mint #C5EAE2, Till’s teal #68bfb9, Ivan’s blue #5D72DB, Luka’s citrine #F9FFBF, Hyuna’s violet #b174ed. The Zombie Stage releases add their own per-song colours on top: #fa23a1 for Candy Scar, #03a17b for Little Bunny.

The Zombie Stage designs are where the difference is visible. Mizi performs in a pastel-pink idol dress with high twin-tails and a heart-shaped hole where the top half of her face should be — her eyes were taken by the owners of the stage — with infection spreading down her jaw, throat, shoulder and back, and a bite mark beside her mouth. Sua wears white, with a dark gemstone covering her left eye socket, a black heart-shaped gem high on her left thigh, and a right leg that is skeletal, exposed bone and rotting tissue.

Both of them smile through the entire performance. That is the design decision the AU rests on: the decay is total and the presentation is unbroken.

The music

Different songs, different writers, same voices.

Candy Scar (4:11) is composed, written and arranged by M!M!2K and produced by Kang. Little Bunny (2:04) is composed and arranged by Choi Yongsu with lyrics by Manju. The vocals are Rubyeye as Mizi and C!naH as Sua — the same performers as the main series, which is the strongest continuity between the two universes and the reason Mizi still sounds like Mizi.

Rubyeye and C!naH are frequently miscredited as the composers. They are the singers.

What carries across

Three things, and no more than three:

1. The characters’ identities. Mizi is still the one who wants the stage; Sua is still the one who wants Mizi. The specifics are rebuilt from scratch.
2. The voices. Same voice actors, both universes.
3. The shape of Round 1. Mizi versus Sua, Mizi wins, Sua pays for it. The AU restages that fixture on purpose.

Everything else — species, government, economy, motive, ending — is new. Which is what makes it an AU rather than a costume change: it takes the one relationship the series is built on and asks what would still be true about it in a world with none of the same rules.

For the Zombie Stage side in full, read Zombie Stage Explained and the Round 1 recap.

Sources

• Official Zombie Stage soundtrack release copy (VIVINOS / SCALAR, 26 June 2026) for the AU premise.
• Song credits and runtimes from the Zombie Stage soundtrack releases.
• Episode content, designs and cast: the ALIEN STAGE Wiki on Fandom, CC BY-SA, quoted and paraphrased for commentary.
• Zombie Stage and Alien Stage are © VIVINOS / STUDIO LICO / SCALAR. This site is unofficial fan commentary.