In Mass Effect's setting, the term "quad" refers to krogan testicles, due to the fact that they've got four balls.
The players of these, also called tenor drums, are normally the most arrogant people in marching band.
When you're getting into a block to start marching watch out cause most quads WILL take you out. Same as bass drums
Normally have the lead drum parts, most important percussion instrument when playing street beats/cadence
Also the only percussion sections that put their harnesses under their jackets
Everyone else: watch out!!!