Emissary

An ancient Titan related to the ancient Prime Prima, one of the thirteen primes. Emissary was originally the Titan of Elonia. A kind bot, Emissary is a gentle giant, however he's powerful enough to defend himself and his citizens, as he needs to.

He has great care for all life, even considering Elonia new habitants as his Citizens.

History:

Emissary was forged on Cybertron 3.6 Billion years ago during the age of evolution, According to him, he acted as the spaceship barge for Prima. He would be put into stasis some point and would stay dormant.

He would be founded by Airwave and Hothouse, and along with others travelled to prehistoric Elonia and set up a colony called Prima recluse their. He would become dormant again after Macabre failed siege of the planet, where he used an EMP superweapon.

His resting place would become the Thrail mountain range(a part of it).Rom was exploring his inwards when he met Cognive and learned of Elonia ancient past[Mystery on the Mountain]He would be still buried when he was officially discovered.

He was still buried while both the Solstar order and his Citizens tried(and failed) to stop Metrotitan reawakening[Recrudesce of Emissary 1 of 2] Stardrive would awaken him and he helped to subdue his old brother in arms attack on Elonia.

After the battle, he along with Metrotitan and the rest of his citizens went to Floron II in his ship alt-mode to start a new[Recrudesce of Emissary 2 of 2]

Notes:

He’s based on IDW Emissary

As it seems that he can equally fight in hand to hand combat, Emissary should be as tall as Metrotitan, who is  two miles(3218.69 meters) tall(because Metroplex is just as tall).