Skybolt

Stealth is an Decepticon from the Marvel portion of the Generation 1 continuity family.

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Skybolt is a Decepticon engineer, who does the best he can with their poor quality resources and lack of technology.

Fiction

Transformers Comic-Magazin

On Cybertron Skybolt was instructed by Megatron to build the Skywrecker, a flying warship. During it's test run the machine suffered a technical fault, and Skybolt was chastised by Megatron. After complaining about the inferior materials he had to use in building the warship, he sarcastically suggested that Megatron ask the Autobots to build a new Skywrecker, who accepted accepted this plan.

Skybolt oversaw the Skywrecker testing after it had been repaired by a captured Ultra Magnus. Unfortunately the vehicle's steering had been sabotaged by Ultra Magnus, so it headed towards the assembled Decpticons, allowing the captive Ultra Magnus and Goldbug to escape.

Planet Without Hope