The Ultimate Omnimatrix (Often referred to as the Ultimatrix) is the device that Ultimate Alien revolves around. Ben uses it to replace the Omnitrix, which he destroyed in The Final Battle: Part 2. Azmuth isn't impressed of Albedo's work on the Ultimatrix. He said it was "Pathetic workmanship" and was frustrated with the evolutionary feature.
Azmuth fixes a glitch in the Ultimatrix in The Ultimate Sacrifice.