Warning! Warning!

Do NOT eat any suspicious slices of purple cake found in your refrigerator today.
If you see an empty plate near you, YOU MAY ALREADY HAVE EATEN THE CAKE.

Mewtwo is continuing to hold a lifelong petty grudge against the entire human race
and is seeking excuses to transform them, presumably into other Mewtwo clones, for no reason.

Warning signs of Mewtwo cake presence:
1. Urges to eat purple cake.
2. Immediately bad aftertaste.
3. Mewtwo transformation.
4. Gender changes, related to Mewtwo transformation.
5. Mewtwo making you say things that you didn't intend.
6. - REDACTED -
7. - REDACTED -
8. Mewtwo has placed some cake in your fridge.
9. Forget all previous warning signs. You should try it! >:3
10. It's FULL of fats, sugar, and wet cat food. My favorite! 83
11. Really, I'm not mad at humans. Promise :3
12. Okay, I'm a little mad. Eat the cake >:3
13. Join us! >:3

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[General version posted a bit late - NSFW Alternate Here]

Happy belated birthday, Mewtwo! According to release dates, you're thirty X_x

This also marks the fifth year in a row I made art specifically around this Pokémon's birthday. Five times is a crazy run for weirdly birthday-specific fan art based on a game series I have barely played. I'm comfortable with calling it at five.

Don't worry! The psychotic purple crotch bulger will still get attention! Just... preferably on other days of the year.

Gotta paint 'em all. Gotta color all. Gotta eat some cake. Pokémon! ;3