Dr. Mog

Dr. Mog is the Moogle professor and historian under whom Tyro (the player) trains in Final Fantasy Record Keeper. He serves as the game's tutor, strategist, and (occasionally) items dealer, acting as the player's main guide to all game features and mechanics.

Story
A mysterious dark force has attacked the Hall of Records after a centuries-long period of relative calm. The attack robs the Records within of their color, corrupting them. The Record Keepers are tasked with protecting and preserving these Records, but with few Record Keepers remaining, Dr. Mog is forced to send his apprentice, Tyro, into the corrupted Records to restore them, as well as the heroes who lived their stories. A veteran Keeper, Dr. Mog has intel on every major enemy fought and uses his knowledge to aid Tyro and all the legendary heroes of the Final Fantasy series in their task of clearing the corruption from the Hall of Records.