Sneak is a weaselbot and one of Slink's lackeys along with Snitch. When cornered he can release bursts of noxious gas from his underarms, and like the rest of the team he has excellent night vision — a bonus in their line of petty thievery.
Sneak, Slink and Snitch were among the Decepticons imprisoned aboard the Alchemor. They were freed when the ship crashed on Earth, where they because enacting a scheme to engineer a shortage of pet food after discovering how much humans spent on their pets. Thunderhoof and Underbite stumbled on their operation as they pilfered food from a warehouse and Sneak and Snitch scuffled with Underbite until the Autobots turned up. Sneak unleashed his underarm odor on Bumblebee, but was tied up by Strongarm and needed Snitch to free him. Once that was done, the pair helped Slink load up a forklift with pet food. They escaped as Thunderhoof brought the warehouse down, only to be hunted down and captured by Bumblebee's team.