https://www.gamespot.com/articles/monster-hunter-world-how-to-get-mega-man-palico-ar/1100-6458228/

The next crossover event in Monster Hunter World is now available. With the Spring Blossom Fest event ongoing, a new quest is now available on PS4 and Xbox One that allows you to get your hands on the crafting materials necessary to dress your Palico up like Mega Man.