An oversized, dangerous and extra-powerful machina
in Final Fantasy X-2
. It is hidden underground Bevelle
, and is said to be able to destroy Sin
. It's also the main goal for Shuyin
to obtain, for with it, he can get rid of his image of what Spira truly is: a corrupted world of violence. Vegnagun has a mind of its own, can be activated by a magical piano attached to it with a special key melody, and is separated in parts such as Legs, Head and the such.
Vegnagun is one big machina.