For a unique character name, you could consider 'Zephyr' which gives an airy and free - spirited feeling. 'Lyra' is also a great choice as it has a musical and celestial connotation. 'Caspian' brings to mind a sense of adventure and mystery, like the sea. These names are not very common but can add a special touch to your short story characters.
For a male, Orion. It's a name associated with the stars, which can give the character an air of mystery. For a female, Lyra. It has a musical and celestial quality. Another option for a male could be Zephyr, which is a bit unusual and gives the impression of something light and free - spirited.
Ava. It's simple yet elegant and has a modern feel. It can be used for a strong and independent girl character in the short story.
Aria. This name has a musical quality to it, which could be perfect if your story has some sort of musical or artistic element. It gives the impression of a creative and free - spirited character. Another unique name is Zoe, which means life in Greek. It can represent a character full of vitality and energy.
You could use 'Nox the Nightmare'. 'Nox' is short and has a mysterious sound, and 'nightmare' is directly related to scary things. Another name could be 'Zoe the Zombie Queen'. It's unique as it gives a different take on the typical zombie character, making her a queen which implies power and a certain level of organization among the undead. 'Thorne the Tormentor' is also a good choice. 'Thorne' sounds sharp and prickly, and 'tormentor' shows that this character likes to cause pain and suffering.
'A Stitch in Time'. This name can be used for a story that involves time - traveling or the importance of doing something at the right moment. 'The Lost Locket' is also a unique name. It could be for a story where a locket holds the key to a mystery, like a lost love or a family secret.
If you want a really unique name, consider something like 'Kairos' which has a philosophical meaning related to the right or opportune moment. For a female, 'Lyra' is not very common and has a celestial feel to it. And for a male character who is a bit of an outcast, 'Rogue' could be a unique name.
Consider 'Eclipse' which has a sense of something being hidden or obscured, just like in an eclipse. 'Whisper' is a name that implies secrecy and mystery as if the character has secrets to tell. 'Grimoire' could be a name for a character who has knowledge of secrets or magic in the mystery story. It's a name associated with books of magic and spells, adding an element of the unknown.
You can start by looking at different cultures. For example, in Japanese culture, names like 'Haruki' or 'Sakura' can be unique and add an exotic touch to your story. You can also combine words that are not usually put together. For instance, 'Moonbeam' or 'Starwhisper'. Another idea is to use names that have a special meaning related to the character's personality or role in the story. If the character is a brave knight, a name like 'Valor' could work well.
Try 'Zephyr' for a character who is free - spirited and quick. 'Aurelia' is a beautiful and unique name for a female character. For a male character, 'Caspian' gives a sense of mystery. These names are not too common but still easy to pronounce and remember.
Beatrice. It has Italian origins and was common during the Renaissance. A character named Beatrice could be a learned and sophisticated woman in the story.