Ty-rex
From Transformers Fanon Wiki
The Ty-rex is a mysterious animal, though since it forms one-third of the Fuzor mode for Dinobot's new form, Mega-Rex, one could presume it is dinosaurian in nature. It is possible that Ty-rexes are similar to a T-rex, or perhaps it resembles a velociraptor, Mega-Rex's previous form.
