Tyrannitron may be small, but he fits right into the general Dinobot theme: angry, snarling, barely-controlled fury in the form of a prehistoric metal monster. Sure, he can convert into a huge shrapnel rifle, but that means his partner Snarl is doing the actual destruction. Tyrannitron would much rather be ripping into the Decepticons tooth and nail on his own, thank you very much.
Marvel Comics continuity
Tyrannitron is part of Ultra Magnus' crew on the Graviton. Apparently he eats things he's not supposed to. Huffer was given the task of watching him (unfortunately for Huffer, who chose to stay on the ship due to his low opinion of Earth) since Snarl was accompanying the crew in stopping Bug Bite, and they did not have time to look for Tyrannitron.
- Snarl w/ Tyrannitron (Action Master, 1990)
- Tyrannitron is a mechanical dino-critter (he actually rather resembles Hojoni) with a simple spring-loaded transformation into a cannon mode that can be held by any Action Master figure. In this mode, he can attach any normal Action Master rifle to the end of his cannon to form a super weapon; in dino-mode he also has a peg-hole to mount any Action Master rifle on his back. He was available only with Snarl.