Nintendo has finally dropped information on when Joker will steal your stocks in Super Smash Bros. Ultimate, on April 17th (aka tomorrow). In addition, Nintendo has released a new trailer that goes into great extent over how Joker plays, plus other content from the Persona series. Joker by himself primarily uses a mixture of his knife and pistol to rake up damage, giving him solid ranged and close combat capabilities. But his main gimmick is the ability to summon his Persona Arsene by filling up a gauge, which causes his normal attacks to have additional power and his Specials to change completely as long as Arsene is summoned. He has two different costumes, ones based on his Phantom Thief persona, and the other based on his school uniform, and his taunts can summon Morgana.
Along with Joker, he will be accompanied by a new stage called Mementos, based on the location from Persona 5, the stage receiving music tracks throughout the Persona series, and the addition of Spirits from the Persona series being included. Additionally, new Mii costumes based on Persona 3 and Persona 4 characters will be included, along with the return of the Tails and Knuckles Mii costumes from Super Smash Bros. for Wii U/3DS.
So when you get the chance, try out Joker in Super Smash Bros. Ultimate, and comment on your first impressions.