Nova Prime - in Japan

In Japan

Convoy is the Japanese Equivalent of Prime. This is sometimes explained in Western Transformers lore as an honorific nickname given to the Autobot (called Cybertrons in Japan) who possess the Autobot Matrix of Leadership.

Unlike the Decepticon (Destron) title Emperor of Destruction, an Autobot with the Convoy honorific is not necessarily the supreme commander of all Autobots. Instead, the title Convoy can be given to any Autobot officer as a sign of their office. There have been occasions, however, when an Autobot has been made Supreme Commander but lacks the Convoy honorific. The most famous of these is the hero Star Saber. Other notable non-Convoy commanders include Fortress Maximus and Dai Atlas.

In Transformers Galaxy Force (Western name: Transformers Cybertron), each of the planets has a Convoy who is said to be the living embodiment of the planet's driving force. Galaxy Convoy (Optimus Prime) is Supreme Commander of Cybertron. Nitro Convoy (Override) is the fastest on the Speed Planet. Flame Convoy (Scourge) is the strongest on the Beast Planet. Megalo Convoy (Metroplex) is the biggest on Giant Planet. Live Convoy (Evac) is an oddity, as there is no native Transformer population on Earth. For the most part, their names pay homage to the fact that Convoys are leaders.