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.
Robo from Chrono Trigger hands down. They set his poor ass to work replanting an entire forest and reversing desertification on half a continent and then come pick him back up after 400 years.... and he isn't bothered at all. It was his idea in the first place.
One of the best scenes from one of the best games ever made.
Made even better by the fact that you can just... not do that or maybe not stumble upon it at all. Also his theme song is one of the best pieces from that era of games.
Also shoutout to LEVI from Scavenger's Reign which I posted about recently. Kind of a similar story in a way.
HOW DID I FORGET ROBO
Crono/Lucca/Robo is my go-to party vs. Lavos. Hell, I think Lucca might be my favorite JRPG character of all time.
Ahhh now I wanna replay Chrono Trigger! But Star Ocean 2R just came out! Ahhhhhhhh!
Who was the entity? I've heard different theories about this, and personally I think it's either Schala or the game developers themselves (or maybe the player?).
I always thought it was the planet itself.
I did a bit more research and found this: https://www.youtube.com/watch?v=YJsLOFXAEGE&t=630s
So yeah, it's the planet itself.