Rassei

Rassei is a baby Sprite Dragon and the familiar of Asia Argento.

Appearance
Rassei is a noticably small dragon, with blue scales and a small pair of wings.

Personality
According to the Familiar Master, a Sprite Dragon needs to be tamed as a child or else they will become uncontrollable as adults.

Powers & Abilities
As a dragon, Rassei has the natural ability to fly with his small wings. He can also generate blue lightning powerful enough to defeat a low-class devil.

Trivia

 * Rassei's name is a portmanteau of Raigeki (雷撃, meaning "Lightning Strike", referring to its ability) and Issei's name.