Tsiehshi

Tsiehshi is a planet, covered with yellow Ore-8 crystals that emit dangerous radiation and are quite explosive.

Fiction

IDW Generation 1 continuity

Tsiehshi was one of the planets seeded with an ore of energon by Shockwave's Regenesis project. Over time, this ore developed into an expansive system of "crystals of pure destruction" that covered the planet. Shockwaves

Later, the Autobots Kup and Outback crash-landed on the planet. Outback eventually died in an accident and Kup was driven insane by the Ore-8 radiation. The other Autobots subsequently found their lost comrade and sent several rescue parties, only to have them be killed by a paranoid Kup. Eventually, Trailbreaker, with his special skills, was brought in to recover Kup. However, the scars of Kup's experience on the planet remained even after his departure. Spotlight: Kup