Forced to recover low in both forms, use to advantage
Is relatively weak without Arsene, try to capitalize on that. Also, whenever he tries to do Rebel's Guard, try to immediately grab him instead of feeding him the extra meter. If the Joker is too much RG happy, you can bait a rebel guard by charging a smash attack and just waiting. He can keep rebel guard for max 1 second and it has quite a long lag, so just hold smash and release on reaction as soon as RG ends
Don't be afraid to rush him down when he's got Arsene, dealing damage to him makes him lose the persona faster
Joker mains have a weird fetish for the dash attack for some reason, which can be easily punished (for example: shield)
Joker is especially susceptible to shield pressure, only oos option to really worry about is bair which isn't even that good
Arsene's Up B has no hitbox, although it has I-Frames at the start of the move, after this it is very vulnerable, easy spike if timed.
