I'll start off by listing mine:
The T-800, Terminator 2: "I know now why you cry, but it's something that I can never do." Gets me every damn time.
ADA, Zone of the Enders: I think I'm the only one who played this game more than the MGS2 demo that came with it. I will never not laugh at the exchange of "You may speak like a human, but you're still a heartless computer, aren't you?" "That is correct. What is the problem?"
Codsworth, Fallout 4: He survives the nuclear holocaust despite not having a bunker and waits 200 years for you to come back. When you look at what changes his relationship with you, he mostly just wants you to be nice to people. I never swapped him out as my companion.
B.O.Y.D., Ducktales 2017: He's adorable. 'nuff said.
TARS and CASE, Interstellar: I really like how Nolan intentionally avoided the evil robot trope for this movie. Acting isn't always a strong suit in Nolan movies, but Bill Irwin killed it here. Plus, the design is super cool. Maybe Nolan should direct an animated movie?
Ayre, Armored Core VI: Best copilot any mecha pilot could ask for. Helpful and adorable.
Data, Star Trek: The Next Generation: I haven't even finished the show, but Data is just phenomenally acted and written (usually). Even if he were the worst character in TNG he'd probably be on this list due to how good the TNG cast is lol.
Bladewolf, Metal Gear Rising: Revengeance: Dog with chainsaw. Dog with chainsaw.
Gundam: The Witch from Mercury* spoilers:
spoiler
Ericht Samaya from G-Witch. I followed the episodes week by week and seeing all of the theories form into the final plot was so much fun.
Metal Gear Solid 2: Sons of Liberty spoilers:
spoiler
GW and the Patriot AI system. Absolutely perfect villains contrasting MGS1, with a message about the control of information that has aged wonderfully. They're also responsible for some of the most memorable moments in all of gaming.
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CASE and TARS are the best part of that film tbh
I also liked CASE and TARS. As much as I can't stand Nolan, I have a soft spot for Intersteller
When they're not CGI, CASE and TARS are puppeted which rules.
Speaking of Hideo Kojima, shout-out to SNATCHER's Metal Gear Mark II
didn't he subvert it, not avoid? I remember some setup around characters not trusting it then the robot did the trustworthy thing.