>>109184977Marvel doesn't have a trinity because the phrase was invented to describe those three characters.
It's like asking what America's version of the Queen is. There is none. They are incompatible concepts.
You can try to take their three most popular characters, but who those are has been largely inconsistent. I think that Spider-Man and Daredevil are the only ones who've had their own comic perpetually since their debut. And characters like Hulk, Spider-Man and Wolverine have virtually no relation with each other and rarely interact like the JLA do.
The only thing even remotely close is Cap, Iron Man and Thor, who are the defacto leaders of the Avengers purely out of seniority and regularity of being published, which is really the same reason the trinity are associated in that way.
