In the "No Good Deed" teaser for Deadpool 2, a dramatic score plays out as the sounds of a bustling city can be heard. A hooded figure with a knapsack walks along a waste-strewn street and pauses when he notices two men bickering in an alley. As he pulls back his hood and reveals his face, we see it's Wade Wilson. 

The teaser continues and it becomes clear that one of the men in the alley is threatening the other with a gun. Wade realizes the gravity of the situation. He darts into a phone booth, pulls out his superhero uniform from his knapsack, and attempts to quickly change. However, the tight confines make it a struggle. He strips, his bare bottom presses up against the transparent phone booth door, he eventually slips into Deadpool's signature suit, and he makes a call before exiting. While this is happening, the man being victimized in the alley screams and wails for help.

The teaser ends as Deadpool arrives on the scene to a corpse. He looks at the slain man on the ground and says, "Oh, you're not gonna walk that one off. That's so gross."