Mol is a carbuncle-type Non-Player Diver (NPD) featured in the Gundam Build Divers series. Classified as a mythical creature distinct from real-world animals such as rabbits or squirrels, Mol became Sarah's companion after she discovered it in a GBN pet shop and was instantly drawn to its appearance.

Following Sarah's adoption, this creature joined the Force Build Divers as a member. Mol possesses two primary abilities: levitation, enabling it to float effortlessly, and size manipulation, allowing it to alter its physical dimensions. Visual portrayals consistently show Mol perched on Sarah's head or nestled close to her, underscoring their bond as owner and caretaker.