Yep. A mad one. One who sought godhood.
In my headcannon, he is called Megalocon which helps to avoid confusion with Megartron. And he got the form with the dragon more with the Matrix of Chaos containing Unicron’s essence. He has his dragon head on his right forearm similar to Megartron’s fusion cannon only it shoots fire, ice, electricity, and air. And his dragon tail forms a sword. And he wields a made as Megartron and uses shoulder mount rocket launchers and hip mount grenade launchers. And the wings act as shields. And he has a Van Dyke beard.
Also be provided a reason for Optimus Primal becoming Primal Prime thanks to the Matrix of Leadership containing Primus’s essence.