I get that you're asking Rehn, but I'll lay it out for you a little more.
Factory Rejects has 1 detector and 5 dolls, but the detector only spawns 1 at a time. They get bigger each one you kill. Their enmity is rather volatile, meaning that whoever last performed an action will end up with hate. Ideally you want some fast attacking DDs to keep the mob's attention after it hits your group with ga spells and mages respond with paralyna/cures. PLD won't save you here either. MNKs are ideal since high hp can eat the ga spells, fast attack rounds, and dolls are weak to blunt. So something like MNK MNK MNK COR BRD WHM will get you through D no problem, though you could do it with less, gear depending.
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