Milky is a reindeer mink of average height with brown eyes and long, blonde hair. She wears a green cloak draped around her back, a long, white laced dress that reveals her cleavage and long legs, and long, pink boots with high heels.
When the Straw Hat Pirates came to the Whale Forest Residential District, Milky offered to guide Chopper to Nekomamushi, causing him to become love struck and stiff. She revealed that Nekomamushi was currently taking a bath, which shocked Chopper.
The next day, Milky was with the rest of the Mink Tribe when Jack and his fleet returned to Zou. They were thrown into chaos by the pirates' attack on Zunesha, but the threat subsided when Momonosuke commanded Zunesha to annihilate the enemy fleet.