- "Tell me about feeling better."
"I'd feel a whole lot better if you'd stop asking questions, and give me something to help me sleep."
- ―M4 and Keyan Farlander
M4 was a medical droid based on the Mon Calamari Star Cruiser Independence during the Galactic Civil War. The droid treated Keyan Farlander for recurring dreams during 0 BBY.