Gabbro

Gabbro is a Cragnon living in The Land of the Cragnons during Super Paper Mario. He is a big fan of Flint Cragley and is one of the few Cragnons to not get caught by the Floro Sapiens and get brainwashed and turned into a slave of King Croacus IV.

Gabbro was caught in Floro Caverns; however with the help of Dottie the Pixl, Gabbro was able to hide from the Floro Sapiens. When the three heroes (Mario, Peach and Bowser) arrived Gabbro thought they were Floro Sapiens until Dottie corrected him.

Dottie wanted to join Mario's team but Gabbro didn't want to lose his friend who helped him escape. Dottie replied she could only be with the people who knew how to control the powers of Pixls. With that, Dottie shrank Gabbro so he could escape the Floro Caverns without getting seen.

Gabbro went through a small door and presumably returned to Downtown of Crag, though he is not seen again.

Trivia

 * He shares his name with Gabbro, a type of igneous rock.