Introducing Nimue! One of several original characters in Grisaille, but only she and one other will be active players in the plot.
Nimue is a Feline from an ancestral line of Keyblade Masters that doesn't originate from MoM or the Foretellers. Her father, Ambrosius, passed when she was just a child. He was out on a mission when he disappeared, and it's surmised Maleficent had something to do with his passing. Nimue worked tirelessly throughout her childhood to inherit and be chosen by Ambrosius' Keyblade, Suncatcher, which was the first Keyblade created by her great ancestor, Felicity. Nimue was the sole master of her homeworld, also called Felicity, by the age of 18.
Nimue is a fighter, able to hold her own in hand-to-hand combat even without her Keyblade, but lacks magic prowess. She rarely leaves for missions without several bangles and charms enchanted by her mother, Isolde, for extra protection.
One day, while protecting a nearby world from Maleficent, Nimue is tossed into a gateway that takes her to Fantasia, otherwise known as Symphony of Sorcery. It's there she meets a Keyblade master and skilled sorcerer named Yen Sid, who tells her she's far from home. He helps her return to Felicity and during the trek they become smitten with each other, eventually leading to a relationship, and then engagement.
However, on the eve of their wedding, tragedy struck as Darkness enveloped Felicity, and Nimue was lost to the Darkness - but there was something else happening than just Felicity's destruction: Nimue and Yen Sid had an argument that destroyed the very foundation of their relationship.
Thirty years have passed, and Yen Sid has carried silent grief and remorse as he continued his path and eventually retired the mantle of Keyblade Master.
All while Nimue has stewed in the Realm of Darkness for those three decades, still in the gown she was going to wear to her wedding rehearsal, fighting off hordes of Heartless, mired in her darkest thoughts and anguish of failure, rejection, and anger.
Just as the worlds face a new crisis and a new Keyblade Bearer is to be chosen by the light, Nimue is found by Merlock (and Pete), with whom she has an old, longstanding enemyship. However, as both are in a situation they don't want to be in, they strike up a pact: Work together to watch each others' backs and take out Yen Sid so Nimue can have her revenge and Merlock can attain more power.
They strike out just as the crew of Max, PJ, Roxanne, Stacey and Bobby begin their own journey to support Goofy and Donald and the new Key Bearer from behind the scenes, giving the young heroes their first real taste of danger beyond the safety of their kingdom.
Yet Nimue has not forgotten all of her virtues. She and Merlock will clash when it comes to her 'being soft' on those most innocent and diverting plans to help when needed - but to those allied with Yen Sid she is enemy #1.