Can I have 4 mewtwo In deck as well as have Mewtwo gx In deck?

Question

I know you can only have have 4 of one Pokémon in a deck. Does this count if you also have that Pokémon in a gx or ex form. Can I have 4 mewtwo as well as one mewtwo gx In my deck.

Answer 1

Short Answer, Yes.

Mewtwo and Mewtwo GX are considered different because they both have different names, despite being the same Pokemon.

Same with EX and Prisim Star cards.