Nurse Ratchet
| Tertiary character | |
| Nurse Ratchet | |
|---|---|
 | |
| Gender | Female |
| Species | Robot |
| First appearance | "Insane in the Mainframe" (3ACV11)  |
| Voiced by | Tress MacNeille |
Nurse Ratchet is a nurse at the HAL Institute. She is an obvious reference to Nurse Ratched from Ken Kesey's One Flew Over The Cuckoo's Nest.
