Dominus Darkwing
The Dominus Darkwing is an EXCLUSIVE pet that was only available from the Exclusive Shop for a limited time. It was released in the Halloween Event 2021 Update.
The latest Pet Simulator X value list for Dominus Darkwing can be found below:

Regular
💎 72,600,000,000 (72.6b)

Golden
💎 Not Available

Rainbow
💎 Not Available

Dark Matter
💎 Not Available