This mob spawns at 55.63, -809.15, -129.75 outside of the Academy of Arcane Arts and Sciences casters guild, on the SW side.
Findable (via Ctrl-F): No
You say, 'Hail, Janam Rekish'
Janam Rekish says, 'Ah, hello there, friend! Me an' Rebby here, we're a just couple o' regular merchants. Though we've got nothin' to sell right now, we'd gladly take any donations. Them's the breaks, I suppose.'