Avengers: Doomsday • teaser trailer

Something's coming. Should be faced with an unthinkable decision. I've fought with many warriors in my time. They were far stronger than all of us put together. And they died. Died facing enemies and threats that scared me far less than this one. Everything that they sacrificed will be for nothing. If we do not stand together, put aside your petty squabbles and presume nothing except this. If you return, we'll return as brothers and sisters. In other words, we're going to need a Marathon blossom.