Crypto-136 crashlands on Earth after a spacerocket hitting his saucer squarely to the bottom. Crypto-137 and Pox come to investigate what happened, and the events escalate into an all out war between Furons and the U.S. (their military and the Majestic secret service). Crypto-137 later finds the remains of Crypto-136 and decides to take revenge on all of humanity, though mostly Majestic.

It should be noted that the Furons see Humans as evil, backwater planet dwellers of primitive intellect, originally seen only suitable for breeding specific kind of DNA material (which Crypto-137 harvests when he can from all the shooting).

Since the Crypto is a clone series, Crypto-137 considers itself to be the same person as Crypto-136 and any before them. Canonically Crypto-137 survives DAH1, though the number is incremented each time the player dies.