Wow, that was a great series, just discovered it yesterday. However, I have to throw out my two cents and say there was a really big missed opportunity right at the end.
Okay, so as soon as Ness and Lucas were the big reveal and start laying out the awesome, everything clicked and I IMMEDIATELY thought, "OH HOLY SHIT, Giygas is behind EVERYTHING!!". All the dialogue about the "Devourer" and Olimar's ranting and raving about "The End" just pointed RIGHT AT HIM, especially since most of what Olimar says is word for word what Pokey Minch spouts off at the end of Earthbound (A character from Brawl I was actually surprised NEVER made an appearance. He was a BOSS in the game for crying out loud). Even the Luigi mindfuck with Peach's corpse and the disembodied voices taunting him was straight out of Giygas' villain playbook. Then it just turns out to be Kirby with another lame homage to Silence of the Lambs. A pretty big drop of the ball to an otherwise fantastic story.
Loved seeing Paula at the end, and for some reason having her there was kinda spooky, like she was going to seek revenge or something.
I also have to say Mario stole the show in the final episode, with the Cape, the Starman (I was WAITING for that) and finally the Mr. G&W Smash Ball vs Mario Smash Ball action.
Link's death was really lame and anticlimactic, ESPECIALLY after the "I'm at FULL HEALTH!" line.
But otherwise, good show, the acting was well done, the costumes were great and overall it was a fun ride.