When the War for Cybertron Optimus Prime (WFC Prime) was released followed by the Fall of Cybertron Optimus Prime (FOC Prime), they were quickly followed by a plethora of 3rd party upgrades that made the playing experience... closer.... to the game experience (Check out the FOC Sword and Shield here).
Hot on the heels of the two video game Primes was an Ultra Magnus that was basically a repaint of the FOC Prime with a new face.
A lot of people complained though that it looked nothing like the FOC Ultra Magnus that appeared in the Nintendo version of the game. So Pandora's Box made armor for Ultra Magnus, called the PB01 Mebsuta. As the two molds were similar, Pandora's Box made a re-colored version of the armor which we have here: PB02 Mekbuda
Still didn't look like Ultra Magnus from the video games.
