
Reminder that R2-D2 – who witnessed Luke and Leia's births and knew they were twins – intentionally exploited Luke's attraction to his sister in order to complete his mission with the Death Star plans, then later watched them kiss on Hoth but said nothing.
That’s because R2 is the most cold-blooded (cold-circuited?) droid in the galaxy. His defining personality trait is an utterly ruthless commitment to completing the mission by any means necessary – regardless of how it impacts anyone else’s comfort, dignity, or safety.
C-3PO doesn't want to come with him when they land on Tatooine? R2 tells his best friend of 20 years "Suit yourself, dumbass" and leaves him to die in the desert.
Luke's uncle wants to buy a different astromech? R2 literally convinces that droid to blow his own brains out for the cause. (this is canon!)
R2 needs to trick Luke into removing his restraining bolt so he can find Obi-Wan? Initiate operation "get this redneck horned up for his own sister."
The predictable consequences of getting that redneck horned up for his sister start to emerge, and R2 has to choose between preventing incest or honoring Obi-Wan's InfoSec protocols? Sorry kids, hope you use protection.
Luke's plan for rescuing Han from Jabba's palace involves tricking R2's best friend into slavery in a place where droids are routinely tortured and killed for entertainment? "Damn, Threepio is gonna hate this. Let's do it, lol."
R2-D2 isn’t the lovable comic relief, he’s a ruthless career intelligence operative who happens to look like a trash can. If compromising your physical and emotional wellbeing increases the probability of mission success by 0.3%, then buddy, you’re about to have a really weird week.