Uglion High Ruler

The Uglions are a group of malevolent aliens from the deepest pocket of space. They appear as the main antagonists of the Sam & Max episode "Sam and Max Vs. The Uglions".

Operations
In the aforementioned episode, the Uglions appear on Earth under the seeming guise of peace and free trade. They run a restaurant called The Frying Saucer and serve the general public. However, the Geek soon discovers that they are really harvesting and freezing humans as a food source. (Of course, the Uglions were not hiding their belligerent side well as seen with an Uglion waiter that shoots a screaming woman while trying to assure the Geek that all is well.)

Sam, Max, and the Geek reach the local military base and find out that the military had summoned the Uglions so they could justify their overspending on weapons. The three manage to defeat the aliens by altering their appearance with zits so as to scare off the crowds. Their mission failed and their captured humans lost, the Uglions flee.

The Final Episode
Oddly, the Uglion leader appears as one of Mack Salmon's collective of villains in the final episode to exact revenge on Sam and Max. It is nevertheless defeated.