Tetrax Shard

Tetrax Shard, dubbed "Hoverboard" in his first appearance for his hoverboard, is a Petrosapien mercenary, hired by Vilgax in Hunted to take the Omnitrix from Ben.

Tetrax gives Ben his hoverboard, saying that it might come in handy. Ben uses it several times throughout the series. In Ben 10: Secret of the Omnitrix, the hoverboard is melted in a vat of nuclear waste, but Ben is given a replacement.