El-Adrel IV Lifeform

The El-Adrel IV lifeform is an unnamed, invisible and highly dangerous creature which inhabits the planet El-Adrel IV. It attacks by generating extreme electric discharges upon touch. Its origins and motivations are unknown, as it attacks anyone who ventures near it.

Appearances

 * Star Trek: The Next Generation - s05e02 - "Darmok" (1991)