|“||Some call the ocean depths cold and inhospitable... I call them home.||”|
The oldest Dinobot, Onyx was created 4 million years ago from a damaged Autobot who escaped the Ark in an escape pod. While, like the other Dinobots, he resents outside authority, Onyx respects Optimus Prime as a leader and warrior. It's Grimlock he has the problem with. He feels Grimlock is a poor leader for the Dinobots and lacks foresight and strategy. Desires leadership of the Dinobots but would rather gain it through respect of deed than fear of power. Overall strength rivals that of Grimlock himself. In robot mode carries a powerful hydro-blaster as well as a massive twin-edged sword. In Baryonyx Dinosaur mode, he is capable of deep water travel and possesses powerful jaws that can crush a car with ease. Greatest flaw is his damaged CPU which leads to ineffectiveness, as well as mindless fits of aberrant rage.
There's a chance that what Grimlock found was parts torn off Onyx, who actually escaped and hid to recover. However, unless Onyx's player returns and wants to bring him back, Onyx is presumed dead, killed by Seacons.
Onyx was played by his creator. Onyx was last seen in September of 2010.