Taco 1 (The First Fallen Taco)

Taco 1 was the first Taco discovered. Many basic tacology principles are based on phenomena originally observed in Taco 1. For example, its name sake. Tacos don't naturally exist on Earth, they appear to fall from some higher plane of being. Why this is is currently unknown, although Taco 75 is theorized to have something to do with it.

Taco 1 is one of the few Tacos granted permission to freely roam around in the lab, due to a lack of any problematic physical or mental traits.