Winner by death, KO.
Morals depending on character.
Start off fifty feet away.
Gladitor is at full confidence.
Location: Earth 616.
Superman - Surfer and Quasar can handle him, Gladiator can puts up a fight, having Kryptonian weakness is one thing that Surfer and Quasar can exploit.
Thor - Pretty much any Annihilators can give Thor a fight, since Ronan have put up a fight with Thor before (though Thor is more powerful), he will be assign to hold off Thor.
Captain Marvel - Surfer and Beta Ray Bill can beat him, Gladiator can give him a fight, but I'll assign Gladiator to hold him back until someone is free to beat him.
Goku - Surfer and Quasar can beat him by using energy manipulation, Beta Ray Bill can also exhaust Goku by using his Stormbreaker to absorb Goku's strongest blast.
Vegeta - Surfer and Quasar can beat the same way as Goku, but since Vegeta is weaker than Goku, he won't last as long.