Ultra Mammoth and his comrades eventually made their way to the present of the Shattered Glass Universe, their own universe having been destroyed by the actions of Magnus' Shattered Glass counterpart. While most of his crew chose to take on normal Cybertronian forms, Ultra Mammoth retained his beast form, and through the heroic Galvatron learned that the Matrix he carried was a component of the Star Saber. He resolved to keep it until Nexus Prime returned, only to run afoul of his alternate self and engage him in a battle. The conflict was soon interrupted by Nexus Prime's arrival, and after sending the evil Magnus to another universe Nexus reclaimed the Matrix and resolved to use the Star Saber and Terminus Blade-the latter being reclaimed from Magnus-to prevent any other universes from suffering the same fate as Ultra Mammoth's.