Gadgets

Omnitrix

It was first mentioned by Azmuth in Map of infinity. He was planning on giving it to Ben, but it was not complete yet along with Ben's maturity needing to increase before he could use it.

Azmuth by the events of The Ultimate Alien: Part 2 had finished making it and claimed that he was working on it ever since Ben got the prototype (approximately six years). In the same episode, he gave it to Ben because he deemed him worthy.

Rust Bucket

The Rust Bucket is Grandpa Max's RV. It is a replica of a GMC Classic Motor home. It is kitted with a lot of Plumbers' gear, which includes a laser and jets. Its license plate number is "S81Z1M".

Despite having post space-age weapons and capabilities, the Rust Bucket also has a faulty toilet and an air conditioner which was broken by Grey Matter.

Max has apparently lost several of these vehicles.

Ultimatrix

The Ultimate Omnimatrix (often referred to as the Ultimatrix) was the device that Ultimate Alien revolved around. Ben uses it to replace the Omnitrix, which he destroyed in a Past Battle with Vilax. Azmuth isn't impressed of Albedo's work on the Ultimatrix. He said it was "Pathetic workmanship" and was frustrated with the evolutionary feature.