Concept: “He will excitedly attach himself to the group, providing spiritual guidance and herbal expertise as a pretence to spread his heretical, pacifistic gospel.”
Content: A supporting NPC who will probably do more harm than good in the long run
Writing: Tone and diction establish a character at odds with the off-kilter images associated with the haberdasher
Art/design: Jaunty hats contrast with the dead-eyed depiction of the haberdasher, visually emphasizing his cheery but deranged character
Usability: Mechanically straightforward and a fun way for GMs to mess with their parties