Rozaliya Olenyeva/Delta
Last updated 2026-02-12
Rozaliya or Subject codename: "Delta" is one of Rozaliya Olenyeva's counterparts and a major character in Captain's Bizarre Adventures. She's a fusion of the original Rozaliya and Liliya of their world. She currently travels around Bubble Universes with her two trainees Rozaliya (Gemina Invasions) and Liliya (Gemina Invasions). She has a good relationship with the Captain's Hyperion Crew and is occasionally invited to board the Hyperion.
Appearance
Compared to base Rozaliya, Delta's general color palette is a mix of pink, blue, black, and white—reflecting the fusion with Liliya. She has an extra blue horn and stripes of mint blue hair. Her tail looks more mechanical and her irises seem almost violet.
Story
Rozaliya is the elder twin sister of Liliya in her Bubble Universe. after "monsters" appeared in her world she, with her twin sister, joined the military. After some time in the military Rozaliya got to the rank of lieutenant, and the twin siblings were inducted into an experiment. The experiment was successful to Rozaliya, but failed to Liliya, as she was hospitalized in St. Freya. For the 297 days after the experiment Rozaliya kept visiting Liliya in the hospital. Rozaliya kept telling stories to her sister, she also telling her to get better soon so they can fight monsters together again. Rozaliya was angry and shocked when the nurse told her about Liliya condition. As Liliya could never fight again, she regretted saying she wanted to fight alongside Liliya.
After unknown time, Rozaliya and Liliya are being chased by monsters while running into an evacuation site, while running Liliya fell down because of exhaustion. Rozaliya then protected Liliya from the monsters. She then told Liliya to leave her behind as Liliya is a powerless against the monsters and she said it was elder sister job to protect her little sister. After Liliya left, Rozaliya was badly injured after fighting with the monsters as she was regretting what she said to Liliya before she left and being a terrible big sister to her. Then she was angry and shocked after seeing Liliya come back to her after getting reinforcement. Rozaliya wanted to yell but blood clogged her throat. she couldn't make a sound then passed out.
The data of Rozaliya after being experimented. The data listed her as subject "Delta"
Rozaliya then wakes up briefly on an operation table, then she hears that Liliya is going an operation to save Rozaliya life. Liliya said it should be both sisters protecting each other. Rozaliya felt her hand gripping tightly with Liliya's hand as the doctor said the operation will end quickly.
Before the Endless Dream Ends
Delta makes her appearance right after Sirin's magic practice ends, wanting to see the Ether Anchor in her possession, as she needs it to complete her mission. Sirin wonders whether the intel she received was fake and that the stone in her possession isn't an Ether Anchor at all, but Delta denies it, saying that there aren't many things that look like an Ether Anchor in the bubble universe besides the stone, and that it's also different from others she has seen as the one in her possessed by Sirin appears to contain no energy at all.
As Sirin was contemplating to herself, something fell out of one of the books, which had turned out to be half a semitransparent bookmark that Delta had picked up and returned to Sirin, while remarking that Sirin's temper reminds her of a frustrated sheep before promptly leaving the room. She immediately returns, reminding Sirin that someone would like to take her to go see the real master of Hyperion, and leaves the room again.
Personality
Before Experiment
Rozaliya is a cheerful girl with frivolous behavior. She is constantly made fun of and tricked by her colleagues, and she also sometimes buys Liliya the same book she brought her before. She is a caring and brave person who is always protective of her younger sister. After enlisting in the military and being experimented on to defeat "monsters," she always visited Liliya in the hospital. She encouraged Liliya to fight together again and told her stories about her day in the military.
After Experiment
After the experiment, Delta becomes much calmer and more serious, her demeanor having become more akin to Liliya's. She had PTSD. Every time she fell asleep, she remembered the day her sister, Liliya, sacrificed herself to help Delta. She also shows annoyance when called by her real name.[3] After meeting the Captain and being invited to join the Captain's Hyperion Crew, Delta starts to show her true colors. While with the crew, she started to socialize more on the Hyperion ship; she befriended every crew member. Delta also often plays games with Sirin and Bronie. Even though Delta rejected the offer to join the crew, she is still invited by the Captain's Hyperion crews when they hold a party on their ship.
Trivia
- The Captain implied that Delta is good at video games.
Notes
- ↑ Unknown Bubble Universe.
References
- ↑ https://bbs.mihoyo.com/bh3/wiki/content/33/detail?bbs_presentation_style=no_header
- ↑ https://twitter.com/houkai3rd/status/1116214559105150976?
- ↑ Honkai Quest
- Delta: I said don't *beep* call me by that name!



