The Mii Gunner is a Mii who uses technology based projectile attacks, but can still throw a punch. The Gunner made every gadget they use in Smash Bros.

A femboy is someone who is biologically male that presents themselves in a (very) feminine manner, through their behaviour and physical appearance, or in a manner that would traditionally be regarded as feminine or effeminate. 

The Gunner likes to Cross dress, Cosplay, and dress up, often making their own clothes to wear as well.