Update (2019-04-01): The render has been removed from the Best Buy Weekly Ad page.
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Through a Best Buy retailer weekly ad promoting the Fighters Pass for Super Smash Bros. Ultimate is the first look at the full 3D model for Persona 5‘s Joker.
Joker as Super Smash Bros. Ultimate DLC was originally announced in December 2018 during The Game Awards. As announced in the February 2019 Nintendo Direct, Joker will be added to Super Smash Bros. Ultimate in April 2019 as Challenger Pack #1. He will be included with a new stage (rumored to be Mementos) and new music.