Blimp Dragon
The Blimp Dragon is a MYTHICAL pet that is obtainable from the Mechanical Egg, with a ~0.0005% base chance of hatching. The Mechanical Egg is unlocked in the Steampunk Area in Tech City.
The latest Pet Simulator X value list for Blimp Dragon can be found below:

Regular
💎 73,000,000 (73m)

Golden
💎 227,000,000 (227m)

Rainbow
💎 533,000,000 (533m)

Dark Matter
💎 923,000,000 (923m)