Blobenstein
The Blobenstein is an EXCLUSIVE pet that was only obtainable from the Exclusive Shop. It is the Frankenstein version of the Blobfish pet. It was released in the Halloween Event 2021 Update.
The latest Pet Simulator X value list for Blobenstein can be found below:

Regular
💎 11,500,000,000 (11.5b)

Golden
💎 Not Available

Rainbow
💎 Not Available

Dark Matter
💎 Not Available