Isabelle is a female Shih Tzu dog who debuts in New Leaf. She assists the player in their new role as the town mayor as their secretary and assistant. She is also the older twin sister of Digby, who works and stands at the front entrance to the Happy Home Showcase.

Isabelle is friendly, polite, hardworking, and eager to help the player with any tasks she can assist with. And as the Mayor, you and her have been spending many years together. Thus, feelings have seemed to arise in her for you...