Croire is a character in the Hyperdimension Neptunia franchise. Croire is a tome similar in nature to Histoire. However, whereas Histoire can establish connections with her counter-parts across dimensions, Croire has the ability to directly traverse dimensions. She plays the role of an observer stirring up trouble for her own entertainment, rather than a direct antagonist. Originally affiliated with Rei Ryghts, Croire would later be captured by the Ultra Dimension version of Neptune, after mistaking her for a bug, and has reluctantly been by her side ever since.
Croire appears in All Star Smashers as an assist character for Big Nep, appearing in her Final Smash, as well as her Side Taunt, losage and Angry Boss Codec.