In an amazing display of predictability, I give you a completely unoriginal idea.

Magma, Aqua, Galactic and Rocket Mewtwos.

We all knew this was going to happen one day.

I took the images in BrawlBox, since my Wii is broke, but to prevent you from accusing me of being lazy, I made them all pretty backgrounds.

Also note that Aqua and Galactic both have pupils, they just don't show up in BrawlBox, Rocket and Magma do not have pupils.

If you're a comic fan, you'll enjoy this, it's Captain Falcon with the most powerful items from DC and Marvel.

The Nova Force.
The Uni-Power.
The Infinity Gauntlet. (Two of them due to mirroring)
All the Power Rings.
All on Captain Falcon.

Note how the stars and constellation chains of the Uni-Power shine, along with the Nova Power chest and stomach light. I made the lights part of the constellation chain, thought it was a nice touch.

Oh and his helmet is super shiny.

I've changed the shell a bit and used some inspiration from cuckoos' Mighty (with permission obviously) to add a bit of black around his face, like the real Mighty.
I've included two textures, Classic Mighty and Fan-art Mighty, sadly, I could only get pictures of Fan-art Mighty and not the double-revamped Classic Mighty.

Mighty the Armadillo from the Sonic series.
Original texture by Raijinmaru, revamped by me.
The shell is actually shiny, but you'd have to see it in motion to appreciate it.
Screenshots taken in Dolphin, since my Wii is broke. I'm not very good at using it, so excuse the poor quality of the screens.

Reusing the Scorpion vertex hack as I mentioned earlier, it's Optimus Prime!
I wanted to make G1 Prime, but it didn't look right on Falcon's curvy body, and I'm not patient enough to try and vertex his body to be more square. So I made a movie-esque version, with the segmented body, but without all the clutter the movie design has.