Alien Parasite
The Alien Parasite is a MYTHICAL pet that can be hatched from the Martian Egg with a ~0.0007% hatch rate. The Martian Egg is found in the Alien Forest in Tech City.
The latest Pet Simulator X values list for Alien Parasite can be found below:

Regular
💎 10,500,000 (10.5m)

Golden
💎 31,000,000 (31m)

Rainbow
💎 96,000,000 (96m)

Dark Matter
💎 293,000,000 (293m)