|This article is about a/an villan in Power Rangers Dino Thunder.|
With Mesogog's newfound power, which he gained after being seperated from his alter ego; Anton Mercer, he creates the Ugly Monster to take down the Power Rangers. After the Rangers discovered Trent was hiding his father's secret, it takes a test of trust for the Rangers to work together in order to bring down this monster. This Ugly Monster was able to defeat even the Triassic Ranger in their battle in space above the Earth. He is ready to finish the job, when the White Ranger stands in his way. The Power Rangers combine their efforts and their weapons to form the Z-Rex Blaster, Super Mode to defeat him. He is able to take down the Thundersaurus and Mezodon Megazords after absorbing their energy, though it was the Dino Stegazord that destroyed him.
The Ugly Monster was voiced by James Coleman.
- The Ugly Monster is the first monster to defeat Connor in his Triassic Ranger form.