The Squid Bartender appears in the episode "Memories of Boom Boom Mountain." It sits in a bucket that is placed in a notch in a tree. It has a system of gears rigged to a piston to squeeze ink out of its body when it turns a wheel, filling the Marauders' mugs with ink for them to drink. The ink has a frothy foam head like a malt beverage.
The squid is lavender with some dark purple spots.
You guys sure you want another round of squid ink?