Hello! I would like to know if VBA GX on my Wii U is allowed.

(whoops, title is wrong. hit "v" instead of "spacebar")

I'm not too knowledgeable on different emulators, but it seems VBA generally isn't accepted for speedruns due to accuracy issues. If you would like to run the game on an emulator, you can use BGB, Gambatte, or Bizhawk. Sorry about that; I'll make sure to clarify that in the rules. Thanks for asking.