Most people's reactions to seeing HAX for the first time.

HAX is some sort of mysterious unknown power that exists in the Universe. The only thing known about HAX is that it can break the very rules of reality itself.

For a while, Nintendoki was the only one known to be able to somehow use HAX. However, the ability was also used recently by Sola Soulhawk and Hades, and it was implied that Segami was capable of using it as well.