Alien Stage Characters
The full cast guide — every key character, their role, abilities, and place in the story.
Alien Stage is a South Korean animated web series by Vivinos, told mostly through music videos. Aliens, called the Segyein, rule humanity and keep humans as pets; children are raised at Anakt Garden to sing, and the best of them enter Alien Stage, a televised contest in which two contestants sing against each other and the loser is executed. The six principal characters grew up together at Anakt Garden: the cheerful Mizi and the reserved Sua, who meet in Round 1; the rebellious Till and the enigmatic Ivan; Luka, the reigning champion and the aliens' favourite; and Hyuna, a former contestant now fighting in the human resistance. Each contestant belongs to an alien guardian who enters them in the show, and each has a singer who performs their songs.
All Alien Stage Characters
Mizi
ProtagonistA 22-year-old contestant from Anakt Garden with pink hair dyed blue at the tips, outgoing, optimistic and bad at hiding her feelings, who wears glasses when she is not on stage. She grew up with Sua and faces her in Round 1, winning by a single point, then faces Luka in Round 5, after which Hyuna's rebels carry her off the stage and the show lists her as missing. She later fights alongside the rebels. Her singing voice is Rubyeye.
Sua
Main CastA 23-year-old black-haired contestant, usually dressed in white, whom Vivinos describes as elusive yet bold. Cold and indifferent to most people on the surface, she is delicate underneath and opens up to almost nobody but Mizi, her closest companion since their days at Anakt Garden. She loses to Mizi by one point in Round 1 and is killed, and she returns in flashbacks. Her singing voice is C!naH.
Till
Main CastThe youngest contestant at 21, grey-haired, timid and sensitive, yet so rebellious that the aliens keep punishing him and his guardian Urak cannot tame him. He loves composing and drawing, and wins Round 2 by singing his own song over his opponent. He beats Ivan in Round 6 and loses the final to Luka, but KARMA reveals that he survived; seven years on he is with the rebels. His mother is Io, from whom he was taken as a small child. His singing voice is AKUGETSU.
Ivan
Main CastA 22-year-old contestant with black hair and red pupils who, at 186 cm, is the tallest of the principal characters. Brought from the slums as a child by his guardian Unsha, he learned to present a polite, cheerful face while staying reserved and hard to read, and he has been devoted to Till since their childhood. He wins Round 3 with Black Sorrow, then gives up Round 6 against Till so that Till goes through, and he dies. His singing voice is Park Byeong-hoon.
Luka
Main CastThe blond, 30-year-old reigning champion, winner of Alien Stage's 49th season and so popular with alien audiences that the craze has a name, Luka syndrome. Charming on stage but emotionally distant and calculating off it, he unsettles Mizi in Round 5 by playing on her grief and beats Till in the final while playing the violin. He grew up at Anakt Garden with Hyuna and her brother Hyun Woo, and he only drops his guard around Hyuna. His singing voice is BL8M.
Hyuna
Main CastA 27-year-old former contestant with long brown hair, independent, outspoken and rebellious. She lost her own round in the 49th season but escaped, joined the human resistance and now leads it. She carries Mizi off the stage after Round 5, sings All-in as the rebels move against the aliens, and in wiege, a duet with her childhood friend Luka, she gives her life to protect him. Her brother is Hyun Woo. Her singing voice is 6FU;.
Hyun Woo
SupportingHyuna's brother, a boy from Anakt Garden's 49th class with the same brown hair and grey eyes as his sister, a wild streak of his own and a fascination with bugs. He was the first to befriend Luka, who was often alone, though the two boys also clashed. He died as a child at Anakt Garden and is seen only in memories and flashbacks, from the prologue to KARMA.
Shine
SupportingMizi's alien guardian, a small Segyein with manta-like wings and pale blue skin, the most openly loving of the guardians. She dotes on Mizi, whom she raised with toys and presents, but she still sees her as a pet and never quite grasps the danger of the contest; she sends Mizi to Anakt Garden because Mizi insists. She appears in the prologue and in MIZISUA.
Urak
AntagonistTill's alien guardian, who has entered other humans in Alien Stage before and values Till for his talent above everything else. In the series' in-universe magazine he shrugs off the chaos of Round 2 because Till won. Till openly defies him and dislikes every alien, Urak included. He appears in Round 6 and in the final, and he is one of the clearest pictures of how the aliens see their pets.
Unsha
SupportingIvan's alien guardian, a refined, wealthy Segyein in a suit who brought Ivan home as a present for his wife and treats him as a promising investment rather than a pet. He gives Ivan more freedom than most guardians, letting him leave the house to model, and he is disappointed and puzzled when Ivan throws Round 6. He appears in Round 3.
Isaac
SupportingA member of the human rebellion, recognisable by the scar across his face and his black cap, and an older-brother figure to Dewey. His older brother, Jacob, led the rebellion until he died, after which Hyuna took over. He fights beside Hyuna and Mizi from All-in onward, and at the end of KARMA Mizi asks him to save Till, which he agrees to do.
Dewey
SupportingA member of the human rebellion from the slums, with bleached blond hair showing brown roots and a dog tag bearing his name. Wild but trustworthy and supportive, he is almost always at Isaac's side, and he fights with Hyuna's rebels in All-in, Round 6, wiege and KARMA. Isaac took him in when they were both young.
Alien Stage Character FAQs
Who is the main character of Alien Stage?
Mizi, the pink-haired contestant who opens the series in Round 1 against Sua, is usually treated as the lead, but the story is shared between six principal characters who grew up together at Anakt Garden: Mizi, Sua, Till, Ivan, Luka and Hyuna. Most videos centre on one or two of them, and each round tells their past through flashbacks as they sing.
Who are the six main characters of Alien Stage?
Mizi, an outgoing optimist; Sua, her reserved closest companion; Till, timid but rebellious; Ivan, polite and enigmatic; Luka, the reigning champion who won the 49th season; and Hyuna, a former contestant who now fights in the human resistance. Five of them take part in the current competition, while Hyuna works against it from outside.
Who sings for the Alien Stage characters?
Each character has a singing voice: Rubyeye sings as Mizi, C!naH as Sua, AKUGETSU as Till, Park Byeong-hoon as Ivan, BL8M as Luka and 6FU; as Hyuna. The series sometimes uses different performers for spoken lines; Mizi's speaking voice, for example, is Oh Eun-soo. Several of the singers have also recorded remixes of other characters' songs for the series' anniversaries.
How old are the Alien Stage characters?
At the start of the story Till is the youngest at 21, Mizi and Ivan are 22, Sua is 23, Hyuna is 27 and Luka, the oldest, is 30. The final video, KARMA, closes by jumping seven years ahead, so anyone still around by then is seven years older.
Who are the Segyein in Alien Stage?
The Segyein are the aliens who rule humanity in the series. They keep humans as pets, raise human children at Anakt Garden and watch Alien Stage for entertainment. Each contestant belongs to a Segyein guardian who enters them in the show: Shine is Mizi's guardian, Urak is Till's, Unsha is Ivan's and Heperu is Luka's.