Desirous Maya is found in Block 5 of Tartarus, Harabah, from floors 191 to 200. It will be in the party's best interest to get rid of them before they start sapping the party's SP.
Desirous Mayas are later found in the second and third section of Antenora within the Abyss of Time. They will support the Phantom Master and Prime Magus by using their Break skills to strip away the defenses of party members that Null, Repel or Drain Fire and Ice attacks. Should they be the last shadow left on the field when their turn arrives, they will escape the battle.
Desirous Maya appears throughout the second Theater, Junessic Land. It attacks with Physical skills, and may increase its attack with Tarukaja. When defeated, it may drop Maya Crystal and Maya Goop. Maya Crystal is used to create Coin Knuckles for Akihiko and Makoto. Maya Goop is used to create the Emerald Stick for the P3P heroine.