Alien (The Mr. Men Show)

These Aliens are a species of space-faring beings from Earth's moon.

Biology
The Aliens are human-sized creatures. They hardly have any limbs to speak of, outside of a pair of simplified arms. Each individual has a prominent unibrow, and a robotic-like antenna on their heads.

Language
The species speak to each other in their own form of language, though to Human ears it sounds much like gibberish.

Technology
The aliens possess a number of highly-advanced weaponry and vehicles: pistols that trap their targets in a goo-like substance for easier transport.