So, Zim's looking pretty cool here!
I'll admit, when I saw GIR being used in that video of Zim fighting, I got concerned that all he would do when summoned is just run into people, but no, he's quite a bit more complicated than that, and like in the first game, seems to be the big defining tool of Zim's moveset. I like how different he is though, being able to run, jump, use a charged Strong attack, and even use ZIm's new Neutral Special; I think it makes him feel a bit more versatile compared to NASB1. Also, looking at the showcase again, it definitely gives off some big Rosalina & Luma vibes, and while I'm not the best at those two, I do still enjoy playing with them a lot, so this'll be interesting.
I also like his new Down Special; it seems like it'll be good for set-ups and is also pretty funny in general.
Also, I noticed that one of Zim's ground attacks involves him spraying the opponent with the cleaning spray from the germs episode; that's a nice callback that wasn't in the first game.
Overall, I'm really liking the updates they did to Zim; they made GIR different from both his NASB1 version and Godard, while still keeping him as the versatile tool he was back then, and Zim's other tools seem useful as well.
So, all that's left (at least with the base roster) is Korra, so the question remains: will her showcase be tomorrow or the day before the game launches?