The Kraathatrogon are a species of gigantic worm-like creatures from Dimension X, who produce Mutagen and are vulnerable to salt...
The adult worms can reach the size of 100 feet long or more.
They have a weird simian face in the tip of their tails and two long antennas which the Kraang - and April - use to ride and control them.
The Kraang 'milk ' them for Mutagen as if they are cows.
He have a confrontation with the turtles and the protagonist and later he have got Tiger Claw in his mount and he is send on the dimension of 1987.
Trivia
- One of them ate Tiger Claw and both got sent to the 80's Turtles environment.