Well, okay, he was playable in the former's DS remake. But now someone has hacked him both into the Super Mario 64 and into New Super Mario Bros Wii. They don't maintain the abilities from Wario Land (unfortunately) or hack the voices (also unfortunate), but damn, they do look really good in every other aspect:
https://www.youtube.com/watch?v=1m8wL53jzZo
https://www.youtube.com/watch?v=ia752zhPLSo
So if you want some playable Wario awesomeness to go with your Waluigi playthrough of Ocarina of Time, here you go! And Miyamoto, with your Wario would need a fart attack comment? Go [BEEP] yourself. The above is pretty much all you needed to do to make New Super Mario Bros Wii ten times more awesome.
https://www.youtube.com/watch?v=1m8wL53jzZo
https://www.youtube.com/watch?v=ia752zhPLSo
So if you want some playable Wario awesomeness to go with your Waluigi playthrough of Ocarina of Time, here you go! And Miyamoto, with your Wario would need a fart attack comment? Go [BEEP] yourself. The above is pretty much all you needed to do to make New Super Mario Bros Wii ten times more awesome.