The Charnocks are an extraterrestrial species which can travel through space without spaceships, by hijacking asteroids. Their skin is desiccated when entering the atmosphere, after which they mold it. They are incredibly tough, resisting brutal asteroid-speed asteroid landing on Earth or powerful energy weapons. They also possess vast superhuman strength, being able to tear through a titanium armored room with little effort. They are able to fly and to secrete an adhesive web-like fluid to immobilize other creatures. They are infamously known as interstellar terrorists.
In the movie MIB: International, Ariana Grande's species is listed as Charnock in the surveillance sequence when Molly enters the London HQ.