Hi Gambito!
Sorry but I don't speak spanish (maybe somebody else here??). And welcome on board
For complete description of WWF Hasbro, you will find what you are searching right here:
http://darvelweb.free.fr/wwfhasbromaniax/pagefigurinesselectionserie.htm11 series + special figures exist!
Figures of your link are custom made figures (not official WWF Hasbro).
For questions about custom, Adri One (the administrator) is more competent than me to answer!
Don't hesitate to post here and enjoy the WWF Hasbro world