View: https://www.youtube.com/watch?v=n53daMg6pLQ
Today's demon is Fairy Jack-o'-Lantern! You would harder pressed to find games he is NOT in. Prior to Persona 5, his name was localized as "Pyro Jack". My guess is the reasoning for this was simply the fact that Jack-o'-Lantern would break character limits. I know there's various opinions on the community if they prefer Pyro Jack or Jack-o'-Lantern. I fall into the latter camp. I remember playing Persona 5 (the first game he was called Jack-o'-Lantern) and my wife saw it and said "That's a Jack-o'-Lantern" and I said "no he's actually called Pyro Jack". Remember Persona 5 doesn't reveal the actual names for Shadows until you get them as a Persona, so in his case he shows up as "Crypt-dwelling Pyromaniac", and then I was surprised to see that I was quite wrong and they finally called him "Jack-o'-Lantern". Oddly enough, his shadow name in P5R was changed to "Inviting Pyromaniac".
You probably remember him as one of the follower demons that would find treasure for you in the original SMTV. It looks like he might have that role again here too, as you see him walking with you in the scene where the group of humans goes into the Fairy Village. He's had various roles in other games, so I'll bring up just two more here. In Digital Devil Saga 1, the "HipHop Brothers" are encountered in Coordinate 136, talking to you in sick rhymes. Then they turn into Jack Frost and Jack-o'-Lantern and you have to fight them:
Of course I'm not going to go without mentioning one of his most notable roles: Jack Bros! He's one of the playable characters alongside his brothers Jack Frost and Jack the Ripper (really wish he would show up in a 3D game). Oddly enough, Jack-o'-Lantern here is still "Jack Lantern", even in the English localization!
Tomorrow's demon is none other than his brother, Jack Frost! Hee Ho!