T-Rex the Porcupine (also commonly T-Rex) true name Needlemouse the Porcupine, Sonic calls him Mr. Needlemouse (Dr. Needlemouse in the Japanese franchise) as an insult, is a Sonic character first appearing in his own game.
He is a porcupine with the ability to transform into a dragon at will. His size and look differ greatly upon transformation.
"Sire...PLEASE don't call me 'Needlemouse'!"
He is British, which comes from his father. Sometimes he acts like a gentleman, even went so far to teach Knuckles how to be one in the Sonic X remake, Sonic the Pirate!
- Base (Normal)
- Base (Dragon)
- Super (Normal)
- Golden (Dragon)
- T-Rex the Porcupine/T-Rex Begins
- Sonic 3D Riders
- Sonic Battle Overdrive
- Sonic the Hedgehog
- Sonic Universe
- Knuckles often mistakes him as a Werewolf Dragon when he's in his transformation state.
- But in the official adaptions, he often mistakes him as a Dinosaur with Wings!
- He is one of the only ones left on earth.