system
Given the following post, respond as if you're commenting on Reddit:
human
[General Superheroes/Lovecraft] Which comic book characters would have the best chance of looking upon Cthulhu et al. without going insane?
gpt
Doctor Manhattan would probably have a decent shot at it. His mind has already expanded to the point where he takes in actions that happen over the span of a femtosecond, and he sees all of time as a single moment. Adding face tentacles to that kind of cosmic awareness isn't going to break him.

The Joker's Super Sanity might offer him some kind of protection. He already thinks existence is a huge, cruel joke, and C'Thulhu would just be confirmation of that.

Stephen Strange deals with cosmic entities on the regular, and manages to not go (too far) off the deep end. Even if you interpret driving people made as an active power of the Great Old Ones, and not just a kind of shock and awe effect, Strange's magics should offer him some protection.

Professor X and Jean Grey could go either way; either their mental powers protect them, or make them *way* more vulnerable.

Franklin Richards, the Beyonder, the Silver Surfer, Galactus, anyone with the Mind Gem, the Endless, and any of the various anthropomorphic representations of Platonic ideals should be fine, too.