The A4 laboratory assistant droid was a modified version of MerenData's EV-series supervisor/interrogator droid. General Grievous was tended to by his doctor, EV-A4-D, who was a A4 laboratory assistant droid.
The A4 laboratory assistant droid was a modified version of MerenData's EV-series supervisor/interrogator droid. General Grievous was tended to by his doctor, EV-A4-D, who was a A4 laboratory assistant droid.