- Available: Defeat the boss at the end of Evil Spirit Club
- Rewards: Red Hairpin, 3200 EXP
The Old Doll is the FOE that chases you throughout the beginning sections of Evil Spirit Club 4th Story. First and foremost, the FOE has a lot of HP, almost double the other ones in the same labyrinth, but it also has three weaknesses (Cut, Stab and Elec). However, don't let that fool you, as it will be a tough fight due to a few factors, such as the Old Doll having a high dodge rate and also its use of Mamudoon, which can quickly cut your party down quickly, especially if you're using the Persona 3 Protagonist (weakness to Dark). There's a plus side, though, as the Old Doll doesn't completely null Light (it only Resists it), so if one of your characters have Hamaon/Mahamaon with Impure Reach, it can make the battle very short.
If you decide to battle it out with the Old Doll, then you might want to have the Persona 4 Protagonist in your party, who nulls Dark, as well as Koromaru (also nulls it). Naoto is the only other character in the game with an innate resistance to Dark, but she can still be killed by it should you have bad luck. Every other character, other than Zen/Rei, should have a Sub-Persona with Resist Dark on it (Mokoi is a low level one that learns it) or have the Dark Pin accessory. The Homunculus item can save you, but you can't buy them yet, unless you wait until a little later in the game to fight the FOE.
As for its other skills, it has Evil Smile (medium chance to Curse and hits party), Mabufudyne, Blade of Fury (Cut attack against a row), Deathbound (Cut attack against party) and Diarahan, which is probably the one move you want to prevent at all costs. You can do this in a few ways, with status ailments and binds, which the Old Doll having resists against all of them. Of course, with Impure Reach, which is much more accessible due to Incubus learning it at level 14 (Skill Card extraction) and other Sub-Personas also learning/having it (Succubus and Lilith are two more). This passive doesn't improve binds sticking, as that is done with Binding Hands (Samael learns it at level 40), but it doesn't hurt to try Magic Bind (Makajam, Salome's Kiss, Silence Circle and Skull Cracker).