V2.0 UPDATE:

This one should be better, I took out some of the sample images that were polluting the dataset (which was underfitted imo) and I think now everything looks cleaner. For this lora, I actually WOULD NOT recommend Anylora checkpoint because it turns Nikolai (and a lot of my recent BSD loras actually) into a cutesy girl pretty much, lol. At least it does on my computer. I don’t know what’s up with that, it’s been happening after the automatic1111 update. Any of the mixes linked in the sample images are my preference and you will probably get better results with those! You may need to inpaint for hands/eyepatch accuracy/face etc. Weirdly enough, the mix listed as "pornmaster" does sfw art of Nikolai really well.

(old caption)

There's already a really good Nikolai lora on civitai so I would urge you to check that one out too! I don't want to steal that person's thunder with this publication, I just wanted to try my hand at making my own for Nikolai since he's one of my favorites ^-^ I'd recommend BlueBoys or AllBoyMix and a strength of 0.7