This is Avengers Arena, where they take many of the popular teen characters from Marvel and are planning to kill them off, a la Battle Royale/The Hunger Games.
And this is all Earth-616 canon. So if people are really dying...Guh. This would be such an awesome concept if it was an alternate universe or a "What if". But no. The deaths in Arena are going to stick according to my sources. We have on the chopping block: Hazmat, X-23, Mettle, Reptil, Nico, and a bunch of people who I can't recognize but I'm sure the comic fans out there will. I'm just.
I'm done, folks. Fuck you, Marvel. Fuck. You.