The two known ario/uigi pairs are dressed in complementary colors. This implies the existence of a third pair that wears blue and orange purple waluigi red mario yellow wario green luigi Little is known about the properties of this proposed 3ario and 3uigi (artist depiction)
![The Standard Model of Ario Theory](https://cdn-ak-scissors.b.st-hatena.com/image/square/709212bb14067c5da8de3aec34706872f2026961/height=288;version=1;width=512/http%3A%2F%2Fwww.lefthandedtoons.com%2Ftoons%2Fdrew_ariotheory.gif)