Duhh

You'd think Game of Thrones was the obvious option if all that mattered was physical strength and strength of will/character and how much they endure.

But the way I see it, 75% of the Teen Wolf characters are freaking supernatural creatures with overpowered abilities; including self-healing, turning into a giant monster, a demonic creature who can basically control others (Nogitsune/Void Stiles), Jennifer who has the power of telekinesis, Josh, who eats and control electricity. also Anuk-Ite who can turn anyone to stone just by looking at them... How is anyone from GOT going to deal with that?

The supernatural Teen Wolf characters would murder all the GOT none-fighters in a second.

Merlin also a set of characters who would beat most of the GOT characters; Simply because with their powers alone no one could even get close, they could just make them fly away over and over again.

All the shows has a lot of mentally strong characters, who endure a lot though.

^Yeah I can't decide! GoT has the strongest characters based on physical strength and mental strength.
But if the supernatural characters of Teen Wolf and Merlin could beat them, what do you choose?

Articuno Good argument, you actually made me change my mind.

Only watch Stranger Things