Dataminers have been on a roll lately, and the trend has continued with yet another discovery that has been confirmed tonight. Dr. HyperCake, a dataminer, has discovered “Jack_Menentoes” within the strings of Super Smash Bros. Ultimate‘s LVD files. According to Dr. HyperCake, “the format of this string matches stage name strings in ui_stage_db”, which is usually (“[Series]_[Stage]”). Joker’s internal name is “jack”, so Joker’s stage may be Mementos. Dr. HyperCake’s tweeted the news, so we’ve included their tweet down below.
Digging through LVD files in Ultimate, and I found "Jack_Menentoes_" lying around amongst the strings. The format of this string matches stage name strings in ui_stage_db ("[Series]_[Stage]"), and Joker's internal name is "jack". Mementos stage confirmed? pic.twitter.com/eCh3PxU2bR
— Dr. HyperCake (@DrHyperCake) February 20, 2019

Mementos seemed like the ideal choice for the stage to me. I can’t wait till this comes out.
Yeah. Mementos has a nice music.
What would be better if they give us other P5 songs other than Last Surprise and Mementos theme.
Say Rivers in the Desert, Blooming Villain, and Life Will Change perhaps?
I like that idea. P5 has such an amazing soundtrack. Life Will Change is one of my favorites.
I would have preferred the Casino Palace since the game opens there and it returns later, but you do spend waaaay more time in Mementos (though it does get tedious later).
I bet- if it’s true- that the Mementos stage will be on a central platform between two subway tracks, and every once in a while a train will zoom by on them from the background. Any fighter at 100% damage or more will be screen K.O.d immediately. A warning will flash on the track a train will come by on moments before it does, allowing fighters to get out of the way, or for cunning players to try to force opponents into the path of the oncoming train.
That stage idea is pretty sick, now I’m hoping that’s precisely how it plays out.
I want the Casino just for Whims of Fate
That does sound awesome. Let’s hope you’re right.
Nice. I was kinda hoping for an actual Palace, but Mementos makes a lot of sense.
Well, i didn’t know jokers last name was Menentoes and as a stage.
Oh great more hentai for you modern moerans! It seems the only good game on the switch is sonic mania no modern sonic for all you fur fags!
I want Odin Dark inside of me.
I wouldn’t mind if Ophelia Dusk would ram her Missiletainn inside of me.
Won’t you roll the Dice see how it may fall?
Tell me wont you spin the wheel?
Give into temptatioooooooon
I’m I the only real Nintendo fan here who never heard of this Joker or the game ?
Strange people
That’s kind of odd that you haven’t at least heard of Persona 5. Especially with how huge it was back in 2017.
Um… DUH!!! That WAS their DLC plan.
Each DLC fighter will get their own stage and OST tracks.
Come on, you guys are saying that like we HAVEN’T figured it out.