Yup, my thing with Alex and Serbian is the multiverse traveling and stuff. So this guy comes from the 10th Dimension to cause havok and make everyone's day a true mayhem! Evil Rex took a different part from his counterpart from the 7th Dimension, Eventually leading him to conquer his entire world with a merciless claw of darkness

If he had an intro before battle, he'd say something like "You seriously think any you think you can stop me? I highly doubt it" or "To me you're less than nothing, vermin deserving to be crushed underfoot"

By the way, I was listening to this when I was making his design, good stuff https://www.youtube.com/watch?v=h6YBHrh4Uno