Lovely Doll is an FOE found on floors 2-4 of the Evil Spirit Club. This FOE pops up in a set position and does not move. It can be chased off by turning on the lights.
This FOE has an exploit to defeat it. The party must include the Persona 4 protagonist, Kanji Tatsumi, the P3 protagonist and Zen and Rei, the other character can be anyone but they must possess the Lightning Smash skill. In the very first turn, use Heat Riser, Dragon Roar, Debilitate and Guiding Sword on the front row while the remaining character defends. The FOE will respond with a standard attack. On the second turn have everyone use a lighting elemental skill, such as Raijinzan, Thunder Smash, Lighting Smash and Thunder Clap, though all attacks may not land.The FOE will respond with Marakunda. If all attacks land you will get some extra damage from a prompted All-Out Attack. Repeat the same steps for turn 3 and the doll will fall easily.