The female Manakete Grima design from Fire Emblem Heroes---who is in turn a character from Fire Emblem Awakening.
Definitely one of the trickier ones to train up, her design has enough extra elements on top of Robin to make it a hassle to maintain everything.
Trigger Words: GrimaFemFE, white hair, long hair, twintails, red eyes, extra eyes, horns, body markings, black scales, black arms, black claws, eyes of grima, feathered wings, dark aura, black robe, hooded robe, open robe, long sleeves, white shirt, multiple belts, brown belt, white pants, brown boots