0049 XY - XY Shiny Gengar (US JP) (ENG) (M) .

On Bulbapedia it says this Gengar can be male or female. On Serebii, I think this event doesn´t even appear on EventDex. This one is male. Which site is correct? Or you didn´t find the female version? Do you know if this event has a female version?

The gender is locked after receiving it, so if it can be female either the wcfull is needed or the female one is needed.

Here is the WCFull.

https://github.com/projectpokemon/EventsGallery/blob/master/Released/Gen 6/Wondercards/ENG/0049 XY - XY Shiny Gengar (ENG) (P).wc6full

Keep in mind the (P) on the filename indicates the WCFull was reconstructed from real wondercards and known information.