Hollow

Hollow is one of the villains from Sky Pretty Cure. Hollow is the first of the Emptiness Duo who appears in the season. He and Blank were also in Skyriver, as it got destroyed.

Allies

 * Blank

Etymology
Hollow (ホロー) - The English word "hollow" means having a hole or empty space inside. In Kamon, the name comes from the word Halo meaning "blind" and O meaning "warrior".