Onyx Prime

Onyx Prime is a member of the Thirteen from multiple continuity families.

Move over, Predaking!

Onyx Prime is the first Transformer with a beast mode and one of the Thirteen. He alone has the ability to properly use the three-faced Triptych Mask given him by Primus, and he holds a deep fondness for Solus Prime. He was originally a multiversal singularity who existed as one being across all space and time, but that is no longer the case.

Fiction

Aligned continuity family

Prime cartoon

According to legend, at the beginning of time, Unicron and Primus battled each other for eons, with neither side remaining victorious for long. Till, that is, Primus created the Thirteen. These Thirteen defeated Unicron and cast him into space. One Shall Rise, Part 1

IDW Generation 1 continuity

Onyx Prime was part of the First Cybertronian Civil War between the Thirteen and their respective tribes. During the conflict, he allied with Nexus Prime to create the Headmasters: combiners of beasts and 'humanoid' Transformers.

The death of Nexus spooked most of the Thirteen, including Onyx Prime, into leaving Cybertron. (His tribe continued to fight on in his name, which didn't end well for them.) He resided on another planet, the location of which was later discovered by Shockwave. As with the other Primes, Shockwave sent one of his Regenesis ores to Onyx's hiding place. The Crucible Despite Nexus's death, Onyx knew that Galvatron would be unable to destroy the Enigma of Combination. He knew the relic had been launched to Earth and sent G.B. Blackrock as a sleeper agent to find the artifact and summon the Prime when he had found it. Helden

According to the inhabitants of the Cybertronian colony world Eukaris, Onyx Prime led the colonization expedition aboard the Metrotitan Chela to create a haven for beastformers, founding the colony Eukaris. By the modern day, "Fateweaver" Blackarachnia had become Onyx Prime's prophet. During the first formal meeting between the Republic of Cybertron and the four tribes of Eukaris, Chela reawoke to execute his master Onyx Prime's final command to protect Eukaris from "standard-formers" by any means necessary. However, Republic High Chancellor Starscream killed Chela, allowing for Cybertron-Eukaris relations to come about. Windblade vol. 2 #6

Sometime later, Onyx had created a false Human called Garrison Blackrock to uncover the Enigma of Combination and summon Onyx to Earth. Galvatron however captured Onyx's minion when Blackrock had discovered what he was. Helden

Fun Publications

Vector Prime noted that both Liege and Onyx utilized female holomatter avatars when interacting with humans. Onyx's avatar inspired the myth of Artemis. Vector Prime also noted that there were universal streams where Onyx went by the name Onyx Convoy. Ask Vector Prime

When Nexus Prime united the Terminus Blade and Star Saber with the intent of thickening the walls between realities to prevent dimensional travel, Onyx Prime and the other members of the "multiversal singularity" incarnation of the Thirteen gathered to witness this momentous event. When Nexus brought the blades together, Onyx and the Thirteen ceased to exist as singularities and were splintered into multiple different incarnations across the multiverse. Out of the One, Many

The individual Thirteen were not identified on-panel in "Out of the One, Many", but a purple, lion-like Transformer, as the only one present with a beast form, was likely Onyx.