Another foreign error, French again. The WotC #3 promo is called Deuxmiaou in French, which literally translates to “two meow”:
Even though Mewtwo is still supposed to be called Mewtwo in French (unlike a lot of other French Pokémon)…
Another thing I learned today, although most of you might already know this one:
Articuno; Zapdos; Moltres, where “uno dos tres” is of course “one two three” in Spanish. Never noticed this personally, tbh. 
Greetz,
Quuador