Momma T is a large Terapod, a quadruped dinosaur-like creature resembling a protoceratops with a long tail, a short elephant-like trunk for a nose, and a standing flap on the back of their heads. Her skin is light brown and she has beige spots on her back. She also has brown eyes.
Momma T and her herd of Terapods eventually migrated through the Great Forest on their way to Boulder Bay. There, she encountered Sonic, who directed her and her herd into a dead end. There, Sonic explained to them that they were migrating in the wrong direction. Momma T was initially hostile towards Sonic, but Baby T calmed her down. Momma T thus allowed Sally to put a translator around her neck. Soon after, Momma T and her herd resumed their journey, but with the Knothole Freedom Fighters accompanying them. Eventually, the herd decided to go to Boulder Bay through the Great Jungle. There, however, Momma T and the Terapods detected the Dr. Robotnik's approaching forces and dispersed. During their journey through the Great Jungle, Momma T praised Baby T for pulling Tails away from a Scorch Plant. She then proceeded to demonstrate how dangerous the Scorch Plants were to the Knothole Freedom Fighters by pushing a rock into the Scorch Plant, which melted the rock. Later, Baby T and Tails called upon Momma T to help Sonic, who had been pulled over a mud pool by a jungle vine. Arriving in time, Momma T knocked down the trunk of a tree, which Sonic used to bounced back on dry land. Afterward, Sonic thanked her with a kiss. Momma T later took a break at a watering hole until she sensed something. Using her translator and Nicole, Sally translated the speech of Momma T, who warned them that Stealthbots were coming. Momma T subsequently took Sonic, Sally and Rotor up on her back and started to run away from the robots with Baby T and Tails. Robotnik, however, locked the heroes inside a force-field. When Momma T tried to breach the barrier with brute force, she got bounce back and the heroes fell off her back. Momma T was then caught in a cage, which got pulled up to Robotnik's hovercraft. Fortunately, Sonic and Bunnie saved Momma T. Sonic then created a hole in the force-field that allowed Momma T and everyone else to escape. After escaping from Robotnik, Momma T suggested using the Scorch Plants to destroy the Stealthbots and make Robotnik abandon his pursuit. After Dr. Robotnik lost track of the Terapods, Momma T and Baby T reached Boulder Bay, where they were would be safe from Robotnik.
As a Terapod, Momma T is remarkably intelligent for an animal. Also, like other members of her species, she speaks in a special and well-developed language that is incomprehensible to other beings without a translator.
Powers and abilities
As a full-grown Terapod, Momma T can run quite fast and has enough strength to knock down even large tree trunks and carry several people on her back without showing any strain. Momma T can also use her trunk as an additional limb to grab items, or even people to distract them from danger. She also possesses expert knowledge about the Great Jungle.