While i'm joking with jumps and attacks, i'm accidentally made a Double jump. When you're jumping need to spam attack and jump. It's like there: (sorry for my bad english)

this is definitely a big thing in speedrunning especialy in the pacifist category since this allows for big time saves, very good find

So I did a bit of goofing around with the double jump it's surprisingly easy to hit consistently as well as if you time your grab perfectly you can do a double jump with it however the grab doesn't stop you from also punching so you can chain a grab double jump with a punch double jump and get a triple.

Triple jump is only actually good if you need to cover long distances though not height.