Since the first superhero appeared in legend and lore, fans and critics alike have asked the age-old question: who would win in a fight between ________ and ________?

The question is so pervasive that it has become the subject of feature films, both blockbuster (“Alien vs. Predator,” “Freddie vs. Jason“) and not so much (“Godzilla vs. King Ghidorah“).

So it’s only fitting that two of the stars of this year’s biggest superhero films (Gal Gadot, “Wonder Woman” and Chris Hemsworth, “Thor: Ragnarok”) would raise that same question.

It all started with a cheeky query from Gadot as she spoke with Katie Couric:

Hey @chrishemsworth — @GalGadot has something to ask you… #wonderwoman https://t.co/XWrDANhsaT pic.twitter.com/wDZDZpIemt

— Katie Couric (@katiecouric) June 2, 2017

Hemsworth was quick with a response:

I think she'd kick Thor's a**

— Chris Hemsworth (@chrishemsworth) June 3, 2017

But Gadot wanted proof:

I always knew you were a smart guy 🙂 But I think its worth a fight . we should collide worlds?

— Gal Gadot (@GalGadot) June 4, 2017

Marvel? DC? Your move.