My own try on a Ryuga LoRA because he is the GOAT. It may not be perfect but I'm fine with it for now.
Work around this prompt, this seems to produce good results. [Ryuga, 1boy, solo, white hair, spiked hair, amber eyes, black tank top, white Jacket on shoulders, black pants, upper body, glowing eyes, ((red aura)), ((in a lava cave)), ((evil smile)), front view]