The Pog Immortuus is a LEGENDARY pet that was hatchable from the Pog Egg that was available for a limited time. It is based on the PogChamp meme.
The latest Pet Simulator X value list for Pog Immortuus can be found below:
💎 1,200,000,000 (1.2b)
💎 3,000,000,000 (3b)
💎 9,200,000,000 (9.2b)
💎 11,800,000,000 (11.8b)