Judging by the characters and abilities that Blizzard announced for Overwatch, I could easily see Nintendo characters filling similar roles.
Here's what I threw together:
It's not a perfect one-to-one by any means, but I think there's room for a "first-person-shooter Smash Bros." in Nintendo's Wii U library. It certainly would be an interesting use of the amiibo figurines, especially if it's an entirely different moveset than from from Smash Bros.
For me, that was near the beginning of my deciphering phase, after I'd figured out the code. When I was transcribing that particular plinth, I started on the "Please send help" side. As I wrote out the words, I got more and more unsettled: "Please send help - I'm trapped..."
Then I got the next words: "Please send help - I'm trapped IN A FEZ..."
I was completely freaking out - Is wearing the fez a prelude to Gomez's doom? Was it the fez talking to me through this pillar? Is this actually a multi-player game now and someone's leaving messages in their blood stains like Demon's Souls? IS THIS GAME HAUNTED?
"Please send help - I'm trapped in a fez factory."