This is a model import from Civitai:
Here's my third ever LoRA, this time this one of Rachel Alucard's most loyal butler, Valkenhayn.

Here's his basic prompt:
masterpiece, best quality, absurdres, 1boy, male focus, solo, valkenhayn, blue eyes, long hair, white hair, facial hair

If you want his standard outfit feel free to add this to the prompt:
ponytail, dark green and brown suit, black shoes, gold accents, white gloves, black tie, pink ribbon

If you want him clad in swimwear, you can add this to the basic prompt:
loose hair, ???????, dark green speedo, barefoot