Positive King is a Shadow in the Persona series.
Positive King shadows are found in the 4th and 5th floors of Yukiko's Castle as regular shadows and on the 3rd floor as Red Shadows. It will typically summon Secret Bambino Shadows to aid it and rarely attack directly. If left alone after summoning three Secret Bambinos, it will flee. They may drop Moustache Fiber when defeated. Selling 10 of these at Daidara will unlock the Kevlar Vest unisex armor and the Feather Strap accessory for sale.
Persona 4 GoldenEdit
Positive King appears on the fourth through seventh floors of Yukiko's Castle within the Midnight Channel. It will summon a Secret Bambino and then try to hit party members with Zio. After some turns pass, it will Stand By and then escape the battle. If a Phantom Mage is present in battle, it may instead summon a Bronze Dice shadow.
On the seventh floor of Yukiko's Castle, Positive Kings will begin summoning Avenger Knights to battle if both are still on the field when they use Summon. They will also cover the Avenger Knight's weakness to Fire with Red Wall if given the opportunity. If only one Positive King is left standing when they use the summon skill, a Secret Bambino will be called instead.
After being defeated, the Positive King may drop the Moustache Fiber material. Selling 4 Moustache Fibers will unlock the Kevlar Vest unisex armor and selling a total of 6 Moustache Fibers will unlock the Feather Strap accessory.