Arcanaloths are sly, jackal-headed beings with humanoid bodies, but they can employ magic to take any humanoid form. They do so to gain the trust of creatures with whom they negotiate, replacing jackal snarls with winsome smiles.
Regardless of its chosen form, an arcanaloth appears well groomed, clothing itself in fine robes. Highly intelligent spellcasters who hunger for knowledge and power, arcanaloths command units of lesser yugoloths and maintain the contracts, records, and accounts of their kind.
Arcanaloths speak and write all languages, making them cunning diplomats and negotiators. An arcanaloth properly paid can broker treaties or alliances with subtlety and finesse, just as an arcanaloth who changes sides can easily turn the best-laid peace talks into all-out war. What the fiend demands in exchange for its time and talent is information, as well as powerful magic items that it can trade for even more information.
