Mewtwo Flats
Clear Topps card

Giant Mewtwo Patch

This was a more expensive Y!J pickup, if I recall correctly. Over $20. I know other collectors are looking for it, or at least were.
3D Card - Pose 1

These things were a bitch to take pictures of. If you used flash, the entire picture would be a blur.
3D Card - Pose 2

I finally had to use my hand in a picture to tilt this enough to get the other half of the pose to show up.
Wendy's Kids' Meal card

I think this had a Keckleon figure attached to it. I saw no need to keep it.
Mewtwo Math Flash Card

Apparently there were a series of cards with elementary math problems on the back. Mewtwo's was 47+27.
Mewtwo Staks card

...why did they put Mewtwo's name on this twice?
Mewtwo Strikes Back Japanese phone card

I wonder if there are any minutes still on this, or if they'd be valid?
Pokemon Trozei stickers

Pokemon Trozei was an evil game. I never even lasted long enough to see Mewtwo in it. His icon was rare as hell from what I heard.
Temporary tattoos

Somedays I still wonder if I should get a permanent Mewtwo tattoo. But then I remember how crappy ink looks when you're a lot older.
Mewtwo "C&D" Sticker

Mewtwo Dog Tag

I guess this was the predecessor to the neckleash.
Sears Exclusive Dog Tag

Back when store exclusivity was big, I had to go into a Sears - a place I hadn't been in for a while - to pick this up and the exclusive Mewtwo hat.
Newer Mewtwo Dog Tag

Not sure which generation this was released during. I think it might have been closer to Mewtwo Returns.
Mewtwo stickers

The Mewtwo Museum mentions these come from a larger sticker book. I don't know anything additional about them myself.
Mewtwo cap figure

I forget where this came from, but I know it's more recent and I believe it ties in with his new film.
Random Mewtwo pog

Again, no clue on the origin of this one.
...what?

I have no clue what this means.
Unknown #1

The first of many stickers of unknown origin.
Unknown #2

Unknown #3

Unknown #4

Unknown #5

Unknown #6

Unknown #7

Unknown #8

Unknown #9

Unknown #10

This might be one of the Mewtwo stickers from the sticker album. I'll have to double-check.
Unknown #11

Unknown #12

Unknown #13

Unknown #14

Unknown #15

Last of the unknowns.