Star☆Twinkle Precure

Precure
Hoshina Hikaru: A second year in middle school who loves aliens and cryptids. She also likes drawing.

Hagoromo Lala: An alien from the planet Samān. She's considered an adult there, despite being the same age as Hikaru.

Amamiya Elena: A third year in middle school whose family runs a flower shop called Sonrisa. She helps her parents out with the shop and taking care of her younger siblings.

Kaguya Madoka: A third year in middle school who is talented at piano and archery. Her father works for the government, trying to capture aliens.

Yuni: An alien who lived on Planet Rainbow before its inhabitants were turned to stone.

Space fairies
Fuwa: A baby fairy who the Star Princesses called their last hope.

Prunce: An alien who the Star Princesses trusted to keep an eye on Fuwa and find the Precure.