Checked October 22, 2026, against Sanrio’s official character profile.
Yes. Sanrio’s profile lists Kuromi’s birthday as October 31. It doesn’t say why that date was chosen, so a Halloween origin story would need a source of its own.
A little more about her
The same profile adds a few details: she calls herself My Melody’s rival, wears a black hood with a pink skull, and likes keeping a diary and reading romance novels.
Celebrating on October 31
Halloween styling is a fun way to mark her birthday. Present it as your own theme rather than her origin story, and lead with the confirmed date.
