Amorous Snake appears throughout the Monad Depths within Tartarus. It will attempt to heal itself or assist knocked down allies if given the opportunity.
Persona 4 / Golden[]
Amorous Snake first appears as a sub-boss on the 7th floor of Marukyu Striptease within the Midnight Channel. After navigating around the floor after Shadow Rise turns the lights off, the party will come across a curtain that gives a warning about entering. The Amorous Snake must be fought to continue the dungeon. It will cast Stagnant Air and continue to do so every third turn, unleashing Virus Wave one the two turns in between. The party can guard for two attacks, then heal and attack during the turn it will recast Stagnant Air afterward. Once Amorous Snake's HP begins to get low, it will switch to using Mind Slice as its preferred attack.
In Golden, Amorous Snake appears in Worlds 1 through 3 of Magatsu Mandala. It may also be summoned by Chaos Fuzz. It now resists electricity and wind. Like before, it will try to poison the party, although here it will use Poison Arrow and Blight to do so instead of Poison Mist. It also has Poison Boost to improve its chances of doing so. When defeated, it may also drop Angelite for trade at Shiroku Pub.
Persona Q: Shadow of the Labyrinth[]
Amorous Snake appears in Stop 4 of the Group Date Cafe. It will attempt to either Bind the party's strength with Thorn Cuffs, or Panic them with Tentarafoo. When defeated, it may drop Serpent Piece, Serpent Ring, and Serpent Scale. Serpent Piece is used to create the Dark Basher for Junpei and the P4 hero, and the Silver Rapier for Mitsuru. Serpent Ring is used to create the Ice Pin accessory, and the Titanium Dog-Suit for Koromaru.