Nelly is a porcupine character in the *Kaiketsu Zorori* franchise, traveling alongside the fox protagonist Zorori in *Majime ni Fumajime Kaiketsu Zorori*. She is the younger sister of recurring character Milly.

Physically, Nelly possesses flesh-toned skin and brown quills resembling hair. Her attire features a purple witch hat, green scarf, pink top with a crescent moon and star motif, a pink checkerboard-patterned skirt, and pink shoes.

Initially whiny and dependent, Nelly matures into a bubbly, energetic child fiercely dedicated to becoming a great wizard. Her determination intertwines with kindness and compassion, driving her goal to spread happiness, make everyone smile, and improve the world. She becomes visibly distressed when unable to resolve witnessed conflicts.

Nelly wields magical abilities including broom flight and spellcasting. She crafts a castanet instrument that induces joy and peace in listeners. As a second-year magic school student, she later collaborates with Roger, an agent from the Magical Intelligence Agency, marking her integration into the magical community.

Her recurring dynamic with older sister Milly—a fellow porcupine witch who wears an off-white coat, pants, witch hat, purple shirt, and maroon shoes—includes shared romantic connections to Roger.

In later seasons like *Motto! Majime ni Fumajime Kaiketsu Zorori*, Nelly maintains her magical pursuits and established relationships.