Helvan visits libraries, internet cafés, and city archives for his research into the monster of the week. Anyone who works there, or frequents them also, could see this big man in his hilariously even bigger coat take off his big hat and sit politely to do his reading dfghgf So long as you aren't jade, anon, or obviously Fleet he won't try and scamper. And even if you are, he doesn't want to make a scene in public so you might be able to lock him into polite conversation. It's fear, not hate, that drives this aversion, so maybe through a chat he might chill out around you? Worth a try.
Blacksmiths and custom arms dealers might get a visit as he passes through! Either repairing or replacing his blades and bolts.
Oops got fucking shrecked in a hunt, guess you need a doctor and not just the gauze, pain killers, and sterilizing alcohol this time. Any medical professionals or just trolls who are more adept at first aid than him finding him either trying to futilely take care of himself, or begrudgingly dragging himself to a clinic, are an easy enough interaction to get started.
You got a monster problem? He'll solve it for you, no charge, though he won't turn down a hot meal or roof to sleep under until he gets the job done.
Oh, also stumbling across this dude just kinda camping out in the woods. You hiking? Also camping? Live here? So long as you don't fit the stated three profiles (jade, anon, fleet) he'll be happy to have some company, if a bit awkward about it.