poor framerate, drawings, sound effects, music, backgrounds.. everything about this doesn't have the effort that gets it through the portal. i can see the effort obviously, but still. here's what you should work on, or at least some of the things:
1. more creative character design. all you have right now is basic flat colored cartoonish animals.
2. give the characters a more in depth background or even a backstory. it doesn't have to be to the level that it loses the comedic aspect, but enough to flesh out your characters so that they're not just interesting, but relatable and have a more understandable personality.
3. improve on the art in general. right now it's very poorly done, and the world in general is extremely bland because of it. try and hone your skills more to the point where you can be comparable with the other art that's passed through the portal before you try to submit anything through it.
4. give the world more personality. right now, there's little depth. it's 3 characters in a cartoon world and they do wacky things and meet wacky other characters. sure, you can apply this potentially to other stories such as kirby's, but that would be oversimplification of their actual story. you don't have to hold onto the comedic focus in general, even. i find that evenly spaced out breaths of humor between an otherwise serious story is where such a thing really shines.
5. better voice acting. this might be a bit of a stretch considering i don't think you have the budget for it, but there shouldn't be one person voicing every character unless that person is a. skilled voice actor who can properly portray the emotions of every character accurately. you're not such a person, and as such, you should leave the task to other people who have more skill in it. even someone like a friend of yours who likes to do funny voices can breathe life into a character and potentially open up for more of these supposed wacky hijinks your characters will enact.

i see the effort greatly, but it's expressed poorly. surely, you can do something great with enough time, patience, endurance, and effort.