Cybertron (Tyran)/707.04 Delta

Primus is a character introduced in Transformers: Dark of the Moon and Transformers: The Last Knight movie. He is the living creator-god of the Transformer race, whose body became the planet Cybertron. Primus is the twin brother of Unicron, his eternal nemesis, whom he battled for eons before going into stasis. Primus also created the AllSpark and the Thirteen, the first Primes, to defeat his evil twin brother and cast Unicron into deep space.

History
Primus was created by the subdivision of the One which also resulted in the creation of Unicron. The two battled on Cybertron, but their endless stalemate led to Primus withdrawing and creating the Thirteen giving them the ability to transform allowing for more possibilities in battle. Primus went into hyper-sleep and would only awaken if the Thirteen won, which they eventually did. Primus merged with the core of Cybertron, shedding his physical body and transferring his energy form into the Core. After the activation of the Well of Allsparks, Primus' entire body serves as the planet known as Cybertron and his spark serves as its Core, which may produce unlimited supply of Energon necessary for the continued existence of the Cybertronian race. Primus created the "Transformers" and is like a God to them as he gives them lives to live. In the early days of Cybertronian race Primus was worshipped frequently as a god, with massive temples, churches and monuments erected in his name but as the race progressed and advanced, the belief in Primus began to slip and eventually most of Cybertronian society believed him to be a myth along with Unicron and the Thirteen.

Dark of the Moon
Cybertron's upper layers seem to have a lot of interlocking hexagonal shapes, and several battles near the end of the war took place there. Sentinel Prime used these geographical features to his advantage when he attempted to escape Cybertron aboard the Ark. Later on, Sentinel Prime attempted to teleport Cybertron via the space bridge-forming pillars from his ship, the Ark in order to acquire Earth's resources to re-energize Cybertron. However, Bumblebee destroyed the master pillar and Cybertron collapsed as it was going through, presumably destroying Cybertron forever. Although, you never know, it could have just put a huge crater in it.

Personality
Primus' personality is unknown, but is presumed to be direct contrast to Unicron's. It has been said by many that Primus is very wise and benevolent. Primus may or may not speak like his twin brother Unicron does, depending if Primus has a vocal sound. Primus gives life and is a god to his creations. Many Cybertronians.

Primus makes up the core of Cybertron and Unicron makes up the core of Earth. Primus and Unicron never had a brother to brother bond. Since they're opposites, they fought countless times. Primus is pure good and Unicron is pure evil.