Reina is a five year old girl who, along with her nine year old brother Kurt, is one of the first human beings devoured by the Queen. She has a great psychological influence on Colt, who is Kurt's reincarnation.

Spoiler

It is later revealed that Reina has been reborn as Shidore, a Chimera ant who serves Hina. In the end she returns home to her village and is reunited with her mother.