The masked Flame Emperor from Fire Emblem: Three Houses, both masked and unmasked varieties.
There's a number of LoRAs out there for the unmasked F.E., but I'm a bit surprised there's nothing for the Flame Emperor outfit itself.
Trigger Words (General): FlameEmperorFE, helmet, red plume, asymmetrical mask, two-tone mask, red mask, white mask, black sclera, glowing eyes, red eyes,
Trigger Words (Unmasked): FlameEmperorFE, long hair, half updo, white hair, forehead, sidelocks, purple eyes, hair ribbon, purple ribbon,
Trigger Words (Outfit): armor, neck armor, shoulder armor, red feathers, black robe, red trim, full armor, gauntlets, leg armor,