Avengers Tower

You go to Avengers Tower to see if you can join their ranks. As you arrive at the door a beam of blue light surrounds you from above and appears to transport you to an unfamiliar setting. You appear to be in the center of a stadium or a coliseum. Along side you are some Avengers, looking equally confused. They are Black Widow, Iron Man, Scarlet Witch, Hulk, Thor, She Hulk and Captain Marvel.
In the stands are unfamiliar green skinned aliens. On a podium raised at the far side of the coliseum stands one of the aliens with a microphone.
"Welcome to the Arena!" The crowd cheers. "Avengers! You may be wondering why you have been brought here, the answer is simple. Entertainment!" The crowd cheers again. Thor swings his hammer round and attempts to fly at the announcer but a **** field repels him. The announcer is unfazed. "You will be made to fight in pairs, the loser having to do whatever the crowd wants! Now lets see who's first!" The announcer spins a large electronic wheel.