The Stealth Viper (also known as the Snakes) is a type of Zoid, a race of mechanical lifeforms from the Zoids fictional universe.
The Stealth Viper is able to transverse a multitude of environments, and is amphibious. The Zoid is used primarily for reconnaissance work, spying, and sneak attacks, although it can be outfitted to operate as a support artillery Zoid.
The Stealth Viper is very well armed for its size, sporting a multitude of cannon and missile weapons. However, its frame is very fragile and it is not very well armoured. The Zoid is best suited to hit-and-run and guerrilla warfare rather than stand-up fights. The favoured Stealth Viper tactic is to bury into sand, then strike at an unsuspecting foe and retreat before they can retaliate.
During the Guylos Empire's campaign to redevelop the ancient Deathsaurer technology claimed from Mount Olympus, the Empire continued to push the war on multiple fronts, to keep the Helic Republic distracted from its true objective. To aid their forces, the Republic revived the Snakes, now known as the Stealth Viper. The all-round adaptability of the design allowed the Republican Army to hold the line in desert and forest regions, in some places pushing the Guylos forces back.
Other Stealth Vipers appeared during the series, as a part of the forces under the command or influence of Hiltz. All these Zoids used the "mutant" Stealth Viper animation model, rather than one based on the toy.
In the Chaotic Century manga, the Stealth Viper is the Zoid of choice for mercenary pilot Irvine. Irvine and his partner, Tornado first encounter Van and Fiona while they are trekking in the desert, and Irvine sets into motion the chain of events that bring Van and the Shield Liger Caesar together. Irvine's Stealth Viper is able to alter the coloration of its exterior to camouflage itself.
Irvine continues to work with Tornado until the Zoid is heavily damaged during the attempt to capture the rogue Zoid Viking. Melissa Su, the child prodigy responsible for both unleashing Viking and enlisting the assistance of Van and Irvine in the recapturing effort, offers to rebuild the damaged Stealth Viper. Tornado is reborn as a Stealth Dragon, and first appears during the fight against the rogue Death Stinger. The Stealth Dragon is able to generate an extremely powerful E-Shield, and is later upgraded with flight capability, which is implied to be of equal or greater speed than that of the Storm Sworder.
The Snakes comes on three frames along with a small wind-up motor, a clear canopy, eighteen rubber caps, a small chrome gold pilot, and label sheets. The Snakes is moulded in light green and grey, with a smoke canopy. The head was shared with the Pteras.
The Snakes’ construction is relatively simple and straightforward. The Zoid uses a simple wind-up motor for its motion; once wound, the Zoid rolls forwards with its body slithering side to side.
The Snakes was released in June 1986 and remained in prduction until 1987.
It is not clear if the Zoid was actually released or not. A single example was sighted on a Yahoo Japan auction, but is not clear if this was a production model or merely a preproduction sample.
Three kits from the Zoids Customise Parts line are designed to work with the Stealth Viper; the CP-04 Attack Unit, the CP-05 Large-Bore Beam Cannon and the CP-06 Bomber Unit