The Heralds of Unicron
Name: Nemesis Prime
(Credit to Pinterest user Jin-Saotome.)
Weapons, equipment, and abilities: Nemesis Prime was created to be Unicron's one-bot answer to the Thirteen, and as such he is immensely powerful. He possesses the combined might of all the original Primes, as well as supernatural reflexes, resilience, and endurance. He wields the Dark Star Saber, a twisted replica of Prima's sword which possesses all the attributes of the original, in addition to the properties of the Dark Energon comprising it's blade.
The Dark Star Saber
Recently, Nemesis Prime acquired the Dead Matrix, a dark counterpart to the Matrix of Leadership. As the Matrix imbues it's host with the power of Primus, the Dead Matrix grants Nemesis mastery over the dark energies of his creator. Though the presence of the Matrix of Leadership prevents Nemesis from using them to their full extent, he can tap into a fraction of the Dead Matrix's power with enough concentration. This process wreaks havoc on his body and leaves him in great pain afterward, however.
Bio: Originally the most loyal of Unicron's heralds, Nemesis Prime has acquired a measure of autonomy and self-awareness during his time in the Void. Scorning his late master for using him for a pawn in his ultimate scheme, leading him to spending most of his life trapped in the non-space outside reality, Nemesis Prime now serves only himself, using the other three heralds to further his interests.
Alt-mode: Cybertronian jet
Weapons, abilities, and equipment: Ramjet exists in a state of both being and unbeing, his broken body held together by his power over the fabric of reality and the sheer force of his will. Of all the heralds, Ramjet is the most difficult to kill, as he can recover and reconstitute his form after most attacks and injuries with great speed.
Ramjet wields the Antrodemonus Sword and has two large canons on his shoulders, all three of which he uses to focus his chaotic powers into more devastating attacks. He is also accompanied by four Minicons: Thunderwing, Thunderclash, Terradive, and Gunbarrel. These Minicons don't appear to have wills of their own, existing as extensions of Ramjet's being and transforming into other blades and blasters for him to use.
From left-to-right: Terradive, Thunderwing, and Gunbarrel.
Bio: Ramjet embodies the chaos that Unicron has come to be associated with in Cybertronian lore. He is a cruel, psychotic individual who revels in destruction, slaughter, and suffering- just as his creator desired. Even the other three heralds keep their distance from him, as he has tried to kill all of them numerous times in a quest to gain Unicron's undivided favor. Ramjet despises Nemesis Prime in particular, envying him for the favoritism he always garnered from the Chaos Bringer. With the Dead Matrix in his possession, however, Nemesis is now able to exert at least a semblance of control over Ramjet with the powers it has given to him. Still, the sadistic seeker is an unpredictable and formidable adversary that all beings must be weary of.
This, but with the robot mode's colors.
Weapons, abilities, and equipment: Megabolt possesses a large arsenal of devastating weaponry, as well as enhanced strength and endurance. In vehicle mode, he is capable of superluminal travel.
Bio: while the other three heralds wield various flavors of what can only be described as magic, Megabolt prefers a more... "scientific" means of enacting the late Unicron's will. And by scientific, I of course mean a nigh-infinite arsenal that would make movieverse Ironhide squeal. Megabolt is a pragmatist, eschewing the lengthy monologues and theatrics of his kin for a more down-to-earth persona. He focuses on completing the task at hand, often becoming tunnel-visioned and unable to think outside the proverbial box.
Infernocus is a combiner, formed from five individual components:
From left to right: Rupture, Gorge, Skulk, Thrash, and Glug.
Alt-modes: the Infernocons transform into varying types of dragons, save for Skulk, who does not possess an alt-mode.
Weapons, abilities, and equipment: The Infernocons are pyrokinetic, able to summon and manipulate fire magnified by the dark energies of Unicron. This power is increased a thousandfold when they combine into Infernocus. The Infernocons wield various melee weapons, and Infernocus carries a massive sword formed from Skulk's armaments.
Bio: Every team of villains needs its' dumb muscle, and Infernocus fills that role perfectly for the heralds of Unicron. Seemingly incapable of speech or higher thought, Nemesis Prime finds it best to simply point the brute in one direction and let him raze to his twisted sparks' content. The individual Infernocons likely contribute to the gestalt's mindless bloodlust, being savages who delight in causing wanton mayhem and destruction.