Gureru

Grell  (グレル Gureru? )  is a rowdy squirrel who attends Fairy Academy. In the events of New Stage 2, he is persuaded by his shadow to capture the Cures' transformation devices so he can assumedly prove himself a hero. After learning the shadow wanted to destroy Fairy Academy, Grell regrets his actions and helps the Cures recover their transformation devices.

Etymology
In German, Grell is a nickname for an irritable, irascible person, from Middle High German, Middle Low German grellen ‘to be angry’. This is reflected in Grell's rambunctious personality.

Trivia

 * Grell shares his name with Grell Sutcliff from Kuroshitsuji.