So this is the main vendor for the game and an npc even tells you that his prices are outrageous because he's the only one and can charge what he wants. He taught Oro, Mato and Sheo and you don't learn this until you learn all three nailarts where he recognizes you as a master (unless you paid attention to his original dialog talking about Oro). He is an equivalent to Yoda, I'd say.
As promised at the False Knight, there's a theory about Sly having that armor and being one of the five knights of Hallownest. We never see an imagine of that armor with a weapon outside if the two fights with the maggot controlling it and the maggot is small and I guess controls it like Hulk-Buster armor. Sly is very small, not much more than the maggot, so the theory is that it's his armor. The maggot even says he just found the armor empty and abandoned and took it to protect his friends and family.
Have a day
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