Marauder's Monkey on yer Back
Location: Yokai Pirate
Price: N/A (Dropped by Disguised Pirate)
Sellback: 0 AC
Rarity: Awesome Rarity
Description: They're like a third arm with a way itchier trigger finger. If you run out of bananas, they're happy to chew on some gold.
Note: Also see Marauder's Monkey Mace.
Thanks to Anonymous Joe.