"Singularities. Infinity Stones." He'd gotten a whole lecture right about when everything started going to hell in earnest. "I've got more experience with some than others- Space, Power, Time, Reality, Mind and Soul in all the colors of the fucked up rainbow. The Space stone- Tesseract- knocked around on earth for a few centuries in hiding before getting picked up by Nazi's to power their weapons and research. My father picked it up after World War 2 and studied it pretty extensively, discovered an element that was similar? The Mind stone's...like a sentient computer without a personality. Artificial Intelligence that's nigh human but completely without human rationality, empathy, reasoning. Trying to work with it sort of fucked things up a bit and then sort of fixed things."

Ultron, Vision. Two ends of a very different scale.

"The Power stone was- I don't know, I don't think it ever made it to earth but essentially it'd be the battery in the overall equation. The Reality stone popped up in London for a little bit courtesy of Asgardian Political Drama before being hidden somewhere not in our solar system but that didn't take, clearly. Dr. Strange had the time stone which was protected by Wizards for...god knows how long. The Soul stone- all I know about that is it cost Thanos his daughter to get it." Ruined the whole damn plan, Quill losing his shit.