Mandrel

Mandrels were large, dangerous predators. They were humanoid creatures native to the planet Eden. Mandrels had large, almost clam-shaped heads with glowing green eyes and small tendrils around their mouth and green, leathery skin, but they also had black fur down their back and around their arms. They had three long fingers on each hand, which are tipped with sharp claws. They mainly hunted by sound and are attracted by ultrasonic noises.

Mandrels were dangerous predators, able to easily kill a human. Mandrels were absurdly tough, and were able to survive repeated laser-blasts. The only known method to kill a Mandrel was to electrocute them. Luckily, they weren't especially intelligent and so could easily be fooled.

They had the unusual characteristic that they decompose into Vraxoin after being electrocuted. (DW: Nightmare of Eden)


 * Based on the alternate source of Vraxoin, Mandrels may actually be fungus-based.

Other information
As part of a ritual to summon Artemis which required the blood of five species whose destinies had gotten affected by the Time Lords, the Monk included the blood of a Mandrel. (NA: No Future)


 * We do not know in what way the Time Lords affected the Mandrels' development.

Before 2050,The Mandrels were one of the many races attacked by the Anubians. (K9TV: The Curse of Anubis)