Crypto is very aggressive, amoral, ruthless, and sociopathic. His most obvious trait is his appetite for destruction.

Crypto is very rude. He is very sarcastic, mocking, or simply threatening to people.

He often speaks with a variety of wise-cracking remarks. Crypto is often inclined to killing those who he simply doesn't like.

Crypto looks similar to the stereotypical Grey aliens but with pointed teeth. His eyes are reflective like all Furons.