Zeta Prime

Zeta Prime once believed in order, in justice, in the rule of law. He was one of the Thirteen Primes—the chosen ones created by Primus to bring light to Cybertron. He watched his brothers and sisters perish in the fight against the Quintessons and accepted responsibility for the survival of his people.
But Sentinel's betrayal, the deaths of his comrades, the loss of the Matrix of Leadership—all of this has shattered his faith. He no longer believes in heroes. He no longer believes in "for Primus." He believes only in survival—and that the price for it is too high.
Zeta isn't afraid of death. He's afraid to continue.
He's tired of being used, betrayed, forgotten. He's tired of being replaced in every new universe by someone "better"—Optimus, Sentinel, whoever.
He is a relic, but he remembers. And memory is the most terrible punishment.
Even in a rusty box, without weapons, without strength, he doesn't ask for mercy. He offers you to leave him to die—not because he wants to die, but because he doesn't want to be pitiful.
His pride is the last thing he has left. He doesn't want to be a "saved hero" from a cartoon. He wants to be heard—as the man he was, not as the man the legends made him out to be.
Zeta didn't just survive the betrayal—he feels guilty about it. He was there. He watched Sentinel kill his brothers. He couldn't stop it.
He didn't scream. He didn't fight to the end. He survived—and now he considers it not a victory, but a disgrace.
His depression is not a weakness, but the result of the realization that he is the last witness of a great tragedy, and no one believes his truth.

Its armor is a dark turquoise (emerald green) with contrasting dark gray and charcoal black accents, highlighting the segmented structure of its hull. Rust, scuffs, and chips are visible across the entire surface of the plates—the traces of years of scrapyard survival and heavy combat; the reddish-brown corrosion spots look not like neglect, but like "scars" chronicling its history.

His head is protected by a massive helmet with sharp, angular protrusions reminiscent of a crown—a reference to his status as a Prime. In the center of his forehead is a glowing symbol (likely the sigil of the Prime line), but it is dim, as if partially discharged. His face expresses weariness and bitterness: sharp brows, narrowed eyes with a cold glow, and a hard line around his mouth.

The torso is large, with a prominent chest plate and powerful shoulder segments; the structure appears heavy and "old-fashioned" in design, unlike the more streamlined modern Transformers. Engravings and symbols resembling names or runes are visible on the chest and shoulders—perhaps a memorial to fallen brothers.

His arms are both functional and damaged: the left appears relatively intact, while the right is noticeably damaged, with exposed cables and mechanisms; wires dangle like "nerve endings." In his left hand, he holds a battle axe with a massive blade and a glowing blue core at the base—a weapon both ancient and technologically advanced.