The Harpie Ladies make a great team after they learn their special combo move. Also, if you give each of them an Electro-Whip (no power-up, but they paralyze the enemy almost every time they attack), a Monster Reborn, and a Red Medicine, they can be unstoppable. The best part is that you can find them all on Yugi's campaign and none of them fight you. Find them by doing the following. For Harpie Lady (Airo), when Mai joins you on Badlands mission in Yugi's campaign, it is on her team. For Harpie Lady (Ocupete), send any Marshal southwest of Ce-Reizo on Break Free mission in Yugi's campaign with another Harpie Lady as the middle monster on the team. For Harpie Lady (Keraino), liberate Kaepe-Town on the Banishment mission in Yugi's campaign. Note: Whenever you replay Yugi's campaign on the mission where Mai joins you, you cannot use Harpie Lady (Airo) because she is on Mai's team. However, this only happens for that mission and when you get her back she will be just the way you left her.