I'm still deciding on which character to use against Diddy. Doesn't seem like any character has an actual advantage on him currently, especially with customs off. I also doubt any character has an exactly even matchup with him as well. Hoo Ha is just such an always-looming advantage. I tried out using Peach at a tournament last weekend and got absolutely
rocked by our resident Diddy. I chalk that up to my own freshness with the character though, Peach did give me some strong moments in the match and I might be hopeful with her going forward. As I'm still choosing my character choice vs Diddy, Peach might be good enough as any... I like what @
Dee-SmashinBoss says here about some unique tools Peach could use versus the character:
I agree that Peach has some potential to face Diddy and has some tools to space, kill and approach him.
Because she can float it greatly helps avoid Diddy's grab.
I think floating from the ground makes you avoid bananas on the ground?
If I am correct, her Usmash should generally beat Monkey flip if time correctly and is a good tool to use against Diddy overall.
Her turnips are defiantly a necessity and you should always have one available.
Is Diddy great at dealing pressure? That's what I find to be one of Peach's greatest weaknesses.
Overall, this matchup is likely to be in Diddys favour 60:40 but it is close, so possibly even.
Float as an approach is total ass. But float as a means to avoid hoo-ha might be something, and a something no other character in the game really has. Imagine taking Diddy to a platform heavy stage like Battlefield. I'm sure he has his own advantages on it with his ludicrous aerials, but floating+platforms could be used to minimize his grab opportunities? Just brainstorming.
Turnips could be an essential tool for dealing with banana. Ideally, I'd like a character with Gravitational Pull, or Pocket - but Rosalina and Villager have their own problems with Diddy. Another option, and one Peach conveniently has is a counter-item. Imagine everytime Diddy pauses to summon a banana, we pause as well to pull up a turnip. Peach doesn't have to be at the mercy of being totally out camped. She can at least answer back with an item of her own - even if Diddy has the much more powerful combination of Peanuts+Banana. At least it's something, and a package Peach can offer.
And the #1 thing that makes Peach interesting versus Diddy in my eyes:
Kill Power. Girl has kill power now, and most critically: an
aerial that can kill early. Fair is such a huge tool and the fact that she can end a stock on Mr. Kong somewhat consistently is dazzlingly attractive.