IsoDidact

"Bornstellar is marked to become a great Builder, just like his father — but this Manipular has other plans."

- Halo: Cryptum

Bornstellar Makes Eternal Lasting (commonly known as "Bornstellar") was an untried Forerunner Manipular whose family and ancestors came from a long line of Builders, the highest and most powerful rate in Forerunner society.

Biography
Of all his father's children, Borstellar was the most rebellious, refusing to follow in his footsteps and become a Builder. As a result of this, his father sent him to learn discipline in a step family of Miners on Edom in the distant Sol system. There, his assigned ancilla taught him of the near-mythical Precursors. Three years later, Bornstellar sneaked aboard a supply transport and traveled to Erde-Tyrene to hunt for Precursor relics. In the city of Marontik, he met two humans, Chakas and Morning Riser, who would serve as guides in his search for Precursor artifacts.

His guides led him to Djamonkin Crater, where he found a Forerunner Cryptum surrounded by inactive War Sphinxes and a baffler. After penetrating the baffler, he opened the Cryptum, revealing the Didact in suspended animation within.

During his subsequent three-year travels with Bornstellar, the Didact performed a brevet mutation on him to allow him access to the Domain. Shortly afterward, the Didact transferred all of his memories and knowledge to Bornstellar, essentially merging his personality with the young Forerunner. The Didact was later executed at the hands of the Master Builder, making Bornstellar, for all intents and purposes, the reincarnation of the Didact.

Forerunner-Flood War
He would go on to meet the Librarian (now his wife) aboard Installation 00. Later on, during the War, he was constantly trying to convince the Librarian to give up on her mission to save other sentient life from the Halo Array's inevitable activation, and return to him "Where it is safe". His pleas, however, were unsuccessful and the Librarian ended up destroying her own fleet, stranding herself on Earth to live out the rest of her days in a place she referred to as "Eden".

Physical description and personality
Presumably like all Manipulars, Bornstellar was young, inexperienced, and was close to the age of becoming an independent member of society. However, despite his noble class, he was quite rebellious in nature, even to the point of defying the history and trade of his family as builders. Because of this, Bornstellar had become increasingly interested in the Precursors, an ancient race of sentient beings far predating his own people.

Physically, like other Manipulars, Bornstellar bore a moderate but noticable resemblance to Humanity than he did to other Forerunner forms, such as a Second or Third-Form. He possessed a thin, pale fuzz over much of his body, such as his arms, along with the partially-furred body and hair that was a notable feature of his kind.

After his brevet mutation at the hands of the Didact, he began to resemble those of the Warrior-Servant caste than he did of the Builders, with grayish-white skin, thicker, a more muscular physique, and thicker, harsher facial features. Even with these characteristics, he still bore traces of the Builder caste, resulting in him possessing a blend of physical features of both.

Trivia

 * Bornstellar is the main protagonist of the Greg Bear novel Halo: Cryptum, the first of three novels in The Forerunner Saga.

List of appearances

 * The Forerunner Saga
 * Halo: Cryptum