During Season 2, Chapter 2 of Fortnite, you have access to several challenges featuring Deadpool.
By completing them, you will unlock cosmetics allowing you to change the hero's colors, but also to select from different skins and variants. To access it, go to the Combat Pass tab and select the air vent at the bottom right of the room.
This manipulation will bring you to its HQ: press the computer to access the list of challenges. One of them will ask you to Dance at Deadpool's Yacht Party.
Introduced as a new location for Season 2, the Yacht has recently changed to take the colors of Marvel's anti-hero.
All you have to do is go to the Yacht, where a big party is happening. Go on the track, dance and the mission will be validated.
We highly recommend you play in team Rumble to achieve this challenge as the Yacht is a very contested location: if you're eliminated, you'll have the possibility to reappear.