Rhinox is a dead Autobot who transformed into a Rhino. He was a brave soldier, but was no match for Devastator.
1975: Battle of Nervada
Rhinox spent a few nanoclicks searching a Library in Nervada, until finding an Image of a grey creature: A Rhino. In the following Battle, Devastator, weilding the Hydra Cannon, trapped and slaughtered Rhinox, using his spark to fuel his power.
His sacrifice wasn't in vain, however, as Optimus soon found out that the weapon only affects Transformers in Robot Mode.
- Rhinox's original name was Tankor. This is a reference to Beast Machines.