Nightmare Chica is an encounterable character in gameplay. Nightmare Chica is manic, crazy. She is far gone from any semblance of sanity. However, she is still calculated and is a good hunter similar to her other nightmarish companions. Nightmare Chica and the other Nightmares do not speak much with only having certain lines.

Nightmare Chica's shouldn't be loud and in your face but her sanity should still be far gone. This is a voice you can go wild with but a good start for the voice can be Lauren Synger if you need something to go off of.