Judging by a number of interviews with the actor, it seems clear that if you were to hang out personally with Ben Mendelsohn, you'd spend most of the time laughing. A month before the release of "Captain Marvel," ScreenRant posted an interview they conducted with Mendelsohn during a set visit, and it's hilarious. The actor leans hard into Marvel's anti-spoiler tactics, brazenly lying about the story. For example, asked about his character, Mendelsohn describes the Skrulls by saying, "Most of the rest of the Marvel comic universe are punks basically. And I guess to quote Snoop Dogg, we are the shiznit. We stand above."
During the course of the interview, we also learn Talos takes issue with the Mad Titan Thanos for a very specific reason: chin theft. Asked how he feels about Josh Brolin's Thanos "stealing" the Skrulls' ridged chin, Mendelsohn answers, "Look, I was very upset with that. Basically I consider Thanos to be a punk. I mean clearly he's looked at us Skrulls, and he's been like, 'You know what, I want to look more like that.'"
Other gems from the interview include Mendelsohn repeatedly referring to himself as "Skrulling" and describing his Talos research as being motivated by a desire to "see us when we were scummy little amphibious tadpoles scum, and see how we rose and became reimagined until this point where I could stand at the zenith of Skrull creation."