As you guys here would probably be interested as well, someone from DKVine reached out to me and asked me to specify more about my Chunky sightings, so I made the following post over there detailing what exactly I saw and what exactly happened.
"Hey guys, it's me, wildvine47, the apparently now-infamous Chunky reporter. I got a personal message over on Smashboards telling me that you guys had some questions about what I saw way back when and all of the stuff I posted about, so here goes.
I was at the Schaumburg Best Buy for Smashfest, and we were on the Colosseum Stage. I was playing as Wii Fit Trainer, and I remember that the person who picked up the AT to unleash him was Pikachu. When he was released, he stood in place for a few seconds, then jumped into the air, and did a ground pound (which unfortunately no one was underneath, meaning I don't know if the pound itself does damage), rumbling the screen a bit. Afterwards, bananas fell down from the top of the screen in his general area, and they bopped people on the head, doing really light hits that made people flinch. A few bananas were left behind as peels. After the banana rain ended, he looked at the camera, shrugged, and disappeared. I do not have video of him, as my friend and cameraman was stopped from recording videos after one of the matches (as you can see here:
https://www.youtube.com/watch?v=hMLuEhbK3ak), and Chunky appeared in a later one.
As for the Cranky Trophy, it was on Smash Run on the 3DS. I played Yoshi and spent most of the time toying around with his changed moves, but grabbed up some goodies along the way. In-game they showed up as question marks, but afterwards at the results screen, it showed that one of the trophies I picked up was Cranky's, the same one from Brawl it seemed.
That's all of the DK-related content I got out of Smashfest. I really am sorry I didn't get the footage, as I would've liked to have some proof to back myself up, but if nothing else there are quite a few scattered other reports around the net and on Smashboards that have also seen him. While I'm confident in what I saw, and AFAIK all of the rest of the non-DK information in my post way back when has also been confirmed to be genuine, without pictures or video, I myself would also take it with a heavy grain of salt had I not seen it myself. Hopefully some footage comes to light or he gets shown on the Dojo sooner rather than later so we can finally put the matter to rest.
If anyone has any other specific questions, I can answer them as well."
So yeah, I have nothing further on the Chunky situation thus far, but I tried to describe it in as much detail as I can remember. Sorry about that guys. Maybe this recent influx of leakers can give us all final confirmation on Chunky, so I can stop getting hate messages from people about it :/