Eleve is a classmate of Erika's, and is a "Leafeon" in appearance. She actually has four different refsheets included here, one for each seasonal form. I've put them all in one post rather than split them up.

Eleve is hard working, popular, and tall - all things that bug Erika about her. She also often wears huge platform shoes to make her seem even taller in height.

While not depicted here, she also has a similar set of gravlets to Erika and August which she'd use to fly in space.

Eleve actually has four forms, one for each season. Click the following links to see the other seasons.
Spring
Summer
Autumn
Winter